New York attorneys Onijala, Mojoyinola Morolayo to Oquendo, Marissa Elizabeth
By surname, as the register spells it
- Attorneys
- 300
- Register file
- Sep 29, 2026
300 living attorneys on the register file of Sep 29, 2026, part 15 of 23 of the O surnames. Each row is the register's record: the registration number, the year admitted, the status, the office and the employer. 72 link to a page of their own.
Onijala, Mojoyinola Morolayo to Oquendo, Marissa Elizabeth
| Attorney | Registration No. | Admitted | Status | Office | Employer | Law school |
|---|---|---|---|---|---|---|
| Mojoyinola Morolayo Onijala | 4929733 | 2011 | Currently registered | Spring, TX | Hpe | Columbia Law School |
| Olatomiwa Yussuff Onikoyi | 4754230 | 2009 | Currently registered | New York, NY | Barclays | Georgetown University Law Center |
| Jacob Olawale Onile-Ere | 5565163 | 2018 | Currently registered | Salt Lake City, UT | SF Firm, LLP | Benjamin N. Cardozo School of Law, Yeshiva University |
| Faith Ezomime Onimiya | 6116024 | 2024 | Due to re‑register | London, United Kingdom | Allen Overy Shearman Sterling LLP | |
| Shigehito Onimura | 4374039 | 2006 | Currently registered | Torrance, CA | Onimura Law Corporation | University of Iowa College of Law |
| Michael Onischenko | 1015270 | 1974 | Due to re‑register | Zug, Switzerland | Bows Pharmaceuticals Ag | Columbia Law School |
| Olga Onishchuk | 4432274 | 2006 | Due to re‑register | Brooklyn, NY | Onishchuk Law PC | New York Law School |
| Chihiro Onishi | 5174800 | 2013 | Currently registered | Tokyo-To, Japan | Yuasa and Hara | Columbia Law School |
| Katsuhiro Onishi | 5965173 | 2022 | Currently registered | Mineola, NY | Nassau County District Attorney’s Office | Cornell Law School |
| Kazunari Onishi | 5170790 | 2013 | Currently registered | Tokyo, Japan | Anderson Mori & Tomotsune | New York University School of Law |
| Zenya Onishi | 4430930 | 2006 | Suspended, delinquent | Columbia Law School | ||
| Marta Oniszczuk-Zawisny | 4071387 | 2002 | Currently registered | Brooklyn, NY | Zawisny & Zawisny PC | Brooklyn Law School |
| Takako Onitsuka | 4915682 | 2011 | Suspended, delinquent | Tokyo, Japan | Harvard Law School | |
| Sayoko Onizawa | 6337208 | 2026 | Currently registered | Tokyo, Japan | Logisteed, LTD. | University of California, Berkeley, School of Law |
| Lisa Marie Only | 5722962 | 2019 | Currently registered | Sewell, NJ | Salmon, Ricchezza, Singer & Turchi LLP | Stetson University College of Law |
| Steven Hsiang Onne | 2846509 | 1997 | Currently registered | New York Law School | ||
| John D Onnembo | 4282828 | 2004 | Due to re‑register | Rye Brook, NY | Fuse Group LLC, Dba Liberty Group | Fordham University School of Law |
| Miranda Onnen | 5654926 | 2019 | Currently registered | New York, NY | Office of the New York State Attorney General | Fordham University School of Law |
| Akiko Ono | 3059235 | 2000 | Suspended, delinquent | Tokyo, Japan | Tmi Associates | Harvard Law School |
| Asami Ono | 5700653 | 2019 | Currently registered | New York, NY | Akerman, LLP | Georgetown University Law Center |
| Katsuya Ono | 2952315 | 1999 | Currently registered | Kanagawa, Japan | Fict Limited | University of Washington School of Law |
| Koichi Ono | 4539722 | 2007 | Currently registered | Tokyo, Japan | Olympus Corporation, Legal Dept. | University of Washington School of Law |
| Lisa Ono | 2908978 | 1998 | Currently registered | Tokyo, Japan | Metlife Insurance K.K. | Stanford Law School |
| Masaru Ono | 1949544 | 1983 | Currently registered | Tokyo, Japan | Ono and Partners | University of Michigan Law School |
| Mie Ono | 4385183 | 2006 | Currently registered | Tokyo, Japan | Paul, Weiss, Rifkind, Wharton & Garrison | Columbia Law School |
| Mina Ono | 2707545 | 1995 | Currently registered | Tokyo, Japan | Asurion Japan Holdings G.K. | New York University School of Law |
| Nahoko Ono | 2826139 | 1997 | Currently registered | Cranford, NJ | Lerner David LLP | Georgetown University Law Center |
| Shiho Ono | 5019229 | 2012 | Suspended, delinquent | Tokyo, Japan | Mori Hamada & Matsumoto | University of California, Berkeley, School of Law |
| Shinichiro Ono | 4143228 | 2003 | Currently registered | Osaka, Japan | 3-1-3, Umeda | University of Minnesota Law School |
| Suehiko David Ono | 4558235 | 2008 | Currently registered | Washington, DC | Cogent Law | Columbia Law School |
| Takashi Ono | 5526405 | 2017 | Currently registered | Tokyo, Japan | Japan Patent Office | USC Gould School of Law |
| Taneki Ono | 2113785 | 1987 | Currently registered | Tokyo, Japan | Taneki Ono | Cornell Law School |
| Yasuhide Ono | 4509477 | 2007 | Currently registered | Osaka, Japan | Harakenzo World Patent & Trademark | New York University School of Law |
| Yoichiro Ono | 5141387 | 2013 | Currently registered | Tokyo, Japan | Oh-Ebashi LPC & Partners | Northwestern University Pritzker School of Law |
| Yuji Ono | 2726149 | 1996 | Currently registered | Tokyo, Japan | Miyake & Partners | University of Pennsylvania Carey Law School |
| Yuriko Ono | 2652436 | 1995 | Currently registered | Nishinomiya City, Japan | Ono Real Estate Co. LTD | SMU Dedman School of Law |
| Yusaku Ono | 2085231 | 1986 | Currently registered | Tokyo, Japan | Ono & Yatabe Glocal Law Office | New York University School of Law |
| Ayako Onoda | 4160552 | 2003 | Currently registered | San Francisco, CA | University of San Francisco School of Law | |
| Haruka Onoda | 5645437 | 2018 | Currently registered | Tokyo, Japan | Bytedance KK | University of California, Berkeley, School of Law |
| Kumiko Onoda | 4670816 | 2009 | Currently registered | University of Washington School of Law | ||
| Goshi Onodera | 5714472 | 2019 | Currently registered | Tokyo, Japan | Marubeni-Itochu Steel Inc. | UCLA School of Law |
| Adrienne Onofrio | 2242345 | 1989 | Currently registered | Northport, NY | Retired | St. John’s University School of Law |
| Dara Lynn Onofrio | 2359677 | 1990 | Currently registered | Clinton, CT | Onofrio Law, P.C. | Benjamin N. Cardozo School of Law, Yeshiva University |
| Jack Raymond Onofrio | 6351399 | 2026 | Currently registered | New York, NY | A&O Shearman | Fordham University School of Law |
| Brian Thomas Onofry | 4677100 | 2009 | Currently registered | Albany, NY | US Doj, US Attorney’s Office, NDNY | Albany Law School |
| Charles Donald Onofry | 2751170 | 1996 | Resigned | Villanova University Charles Widger School of Law | ||
| Jennifer Potter Onofry | 4366001 | 2006 | Due to re‑register | Port Jervis, NY | Walsh & Onofry | Elisabeth Haub School of Law at Pace University |
| Robert Anthony Onofry | 1116763 | 1976 | Currently registered | New England Law Boston | ||
| William Anthony Onofry | 4365433 | 2006 | Due to re‑register | Port Jervis, NY | William A. Onofry, PLLC Dba Walsh & Onofry | Elisabeth Haub School of Law at Pace University |
| Emil Frank Onolfi | 5562814 | 2018 | Currently registered | New York, NY | Hinshaw & Culbertson LLP | Brooklyn Law School |
| Francis Nnanyelugo Ononaji | 2523108 | 1993 | Currently registered | Spring Valley, NY | Francis Nnanyelugo Ononaji, Esq | Nigerian Law School |
| Novie Jay Dureza Onor | 6228530 | 2025 | Currently registered | QUT School of Law, Queensland University of Technology | ||
| Anastasia Onorata | 1711035 | 1981 | Currently registered | Albany Law School | ||
| Gerard Joseph Onorata | 2432169 | 1991 | Currently registered | New York, NY | Peckar & Abramson, PC | Seton Hall University School of Law |
| Anthony Adrian Onorato | 4572269 | 2008 | Due to re‑register | Washington, DC | Export-Import Bank of the United States | Georgetown University Law Center |
| David Joseph Onorato | 2213593 | 1988 | Currently registered | Georgetown University Law Center | ||
| Donald M. Onorato | 2544021 | 1993 | Currently registered | Hackensack, NJ | Donald M. Onorato, Esq. | Seton Hall University School of Law |
| Frederick James Onorato | 2327757 | 1990 | Currently registered | New York, NY | Rezolveai PLC | Fordham University School of Law |
| George Skyler Onorato | 5303516 | 2017 | Currently registered | CUNY School of Law | ||
| Joanna R. Onorato | 4549861 | 2008 | Due to re‑register | American University Washington College of Law | ||
| Joseph Robert Onorato | 1422104 | 1974 | Currently registered | Maurice A. Deane School of Law at Hofstra University | ||
| Maria Amata Onorato | 2420933 | 1991 | Currently registered | St. John’s University School of Law | ||
| Philip Joseph Onorato | 2396919 | 1991 | Currently registered | New York, NY | Onorato Law LLC | Washington University in St. Louis School of Law |
| Stephanie Andrea Onorato | 3029303 | 2000 | Suspended, delinquent | Meriden, CT | Aldrich & Hanks | St. John’s University School of Law |
| Susan Kohnken Onorato | 1699289 | 1980 | Currently registered | Brooklyn Law School | ||
| Tara Marie Onorato | 4014189 | 2002 | Currently registered | Hempstead, NY | Nassau County Legal Aid | Touro University Jacob D. Fuchsberg Law Center |
| Vincent Salvatore Onorato | 5437199 | 2016 | Currently registered | New York, NY | Sidley Austin LLP | Washington University in St. Louis School of Law |
| Tomoko Onozawa | 4154167 | 2003 | Currently registered | New York, NY | United States Attorney’s Office, Southern District of New York | Brooklyn Law School |
| Erica Welch Onsager | 5117361 | 2013 | Currently registered | New York, NY | Office of the Comptroller of the Currency | University of Chicago Law School |
| Joshua H Ontell | 5536362 | 2017 | Resigned | Benjamin N. Cardozo School of Law, Yeshiva University | ||
| Michael Jared Ontell | 5297858 | 2014 | Due to re‑register | New York, NY | Ontell & Associates PLLC | University of Michigan Law School |
| Robert Joshua Ontell | 4629960 | 2008 | Currently registered | New York, NY | Ontell & Associates | Brooklyn Law School |
| Daniel Ontiveros | 5427513 | 2016 | Due to re‑register | Maurice A. Deane School of Law at Hofstra University | ||
| Patrick Anton Carlon Ontiveros | 2927218 | 1998 | Suspended, delinquent | Paloalto, CA | Tomlison Zisko Morosoli & Maser LLP | Columbia Law School |
| Joseph Chimeremeze Onu | 4779617 | 2010 | Due to re‑register | Oakton, VA | William & Mary Law School | |
| Anthony Okechukwu Onua | 2512838 | 1992 | Resigned for a disciplinary reason | University of Nigeria Faculty of Law | ||
| Nnenna Okike Onua | 4286381 | 2005 | Currently registered | New York, NY | McKinley Onua & Associates | Brooklyn Law School |
| Emmanuel Onuaguluchi | 2547123 | 1993 | Disbarred | University of London (other colleges and external programme) | ||
| Michael Alexander Onufer | 5026927 | 2012 | Currently registered | Beverly Hills, CA | Wme Group | George Washington University Law School |
| Pamela Anne Onufer | 2865178 | 1998 | Currently registered | Short Hills, NJ | Proskauer Rose LLP | St. John’s University School of Law |
| Arinzechukwu Nzubechukwu Onugha | 4623831 | 2008 | Due to re‑register | New York, NY | Fried, Frank, Harris, Shriver & Jacobson LLP | New York University School of Law |
| Agu Kalu Onuma | 5816434 | 2020 | Currently registered | New York, NY | North Carolina Central University School of Law | |
| Namiko Onuma | 3971082 | 2001 | Currently registered | Tokyo, Japan | NTT Urban Value Support, Inc | Duke University School of Law |
| Susan J. Onuma | 2198109 | 1983 | Currently registered | New York, NY | Smith, Gambrell & Russell, LLP | University of Pennsylvania Carey Law School |
| Toshiyuki Onuma | 2980563 | 1999 | Currently registered | Montreal Quebec, Canada | Delegation of Japan To Icao | University of Pennsylvania Carey Law School |
| Uloma Kalu Onuma | 5144480 | 2013 | Currently registered | New Haven, CT | New York University School of Law | |
| Gertrude Ene Onuoha | 4692562 | 2009 | Currently registered | New York, NY | Law Offices of Gertrude Onuoha | Benjamin N. Cardozo School of Law, Yeshiva University |
| Ifeoma Theresa Onuora | 4896015 | 2011 | Delinquent | Tarzana, CA | St. John’s University School of Law | |
| Selin Onur | 6164958 | 2024 | Currently registered | |||
| Selin Ece Onur | 5842927 | 2021 | Currently registered | North Wales, PA | Merck | University of Texas School of Law |
| Doruk Onvural | 5419320 | 2016 | Currently registered | Washington, DC | Klein Hornig | Vanderbilt University Law School |
| Chukwudubem Sean Onwualu | 6300206 | 2026 | Currently registered | New York, NY | White & Case LLP | University of Virginia School of Law |
| Chiemeka Franklyn Onwuanaegbule | 5959887 | 2022 | Currently registered | New York, NY | Kirkland & Ellis LLP | Georgetown University Law Center |
| Chinyere Ezinwanyi Onwuchekwa | 4969929 | 2011 | Currently registered | Brooklyn, NY | Ceo Law Firm LLC | University of Arkansas School of Law |
| Kelechi Samuel Onwuchekwa | 4814935 | 2010 | Currently registered | Bronx, NY | CUNY School of Law | |
| Nnenna Anastasia Onwuchekwa | 6307771 | 2026 | Currently registered | Uniondale, NY | Maurice A. Deane School of Law at Hofstra University | |
| Uzoamaka Onwuchekwa | 4595674 | 2008 | Due to re‑register | University of Richmond School of Law | ||
| Wisdom Onwuchekwa-Banogu | 6131551 | 2024 | Due to re‑register | Washington, DC | Sullivan & Cromwell, LLP | Columbia Law School |
| Elochukwu Nzekwe Onwujekwe | 5081849 | 2012 | Currently registered | White Plains, NY | New York State Workers’ Compensation Board | |
| Stephen Joshua Ayugi Onyango | 4368445 | 2005 | Currently registered | Columbia Law School | ||
| Stanley Inya-Eleje Onyeador | 5582358 | 2018 | Due to re‑register | Los Angeles, CA | Latham & Watkins LLP | Vanderbilt University Law School |
| Lynn Chidinma Onyebeke | 5943667 | 2022 | Due to re‑register | Wilmington, DE | Interdigital, Inc. | University of Virginia School of Law |
| Tochi Joshua Onyebuchi | 5629068 | 2019 | Currently registered | Columbia Law School | ||
| Echezonna Uchenna Onyedi | 6348155 | 2026 | Currently registered | Nigerian Law School | ||
| Lucy Nnenna Onyeforo | 5604772 | 2018 | Due to re‑register | New York, NY | Faegre Drinker Biddle & Reath LLP | Fordham University School of Law |
| Chukwuemeka Nnamdi Onyejekwe | 4494811 | 2007 | Currently registered | New Albany, OH | Mekka Don Enterprises, LLC | New York University School of Law |
| Kelechukwu Chidi Onyejekwe | 6142533 | 2024 | Currently registered | Baltimore, MD | Opla | Howard University School of Law |
| Onyinyechi Christene Onyejiaka | 6145072 | 2024 | Currently registered | University of Iowa College of Law | ||
| Chikaodili Ifeoma Onyejiukwa | 6077440 | 2024 | Due to re‑register | NY, NY | Latham & Watkins | Georgetown University Law Center |
| Ogechukwu Nwamaka Onyekaba | 2850246 | 1997 | Currently registered | |||
| Dina I Onyema | 5358767 | 2015 | Currently registered | New York, NY | Alvarado Law PC | Northwestern University Pritzker School of Law |
| Nnenna Chikaodi Onyema | 5888144 | 2021 | Currently registered | Northwestern University Pritzker School of Law | ||
| Veronica Nicole Onyema | 4486817 | 2007 | Currently registered | Washington, DC | U.S. Department of Justice | Cornell Law School |
| Awele Frances Onyemenam | 4020202 | 2002 | Suspended, delinquent | Inglewood, CA | University of Nottingham School of Law | |
| Kingsley Chukwuleke Onyemenem | 4237764 | 2004 | Currently registered | Essex, United Kingdom | K C Law Chambers & Attorneys at Law | |
| Kendall Noel Onyendu | 5721147 | 2019 | Currently registered | Los Angeles, CA | Miller Barondess, LLP | University of Texas School of Law |
| Tonna Emmanuel Onyendu | 5815261 | 2020 | Currently registered | Los Angeles, CA | Kirkland & Ellis LLP | Georgetown University Law Center |
| Kelechi Ozioma Onyeobia | 4265443 | 2004 | Due to re‑register | Bronx, NY | Kelechi Onyeobia | Elisabeth Haub School of Law at Pace University |
| Nnaemeka Ikenna Onyeonoru | 6339808 | 2026 | Currently registered | |||
| Ndubuisi Tochukwu Onyereri | 4230637 | 2004 | Currently registered | Houston, TX | Ndubuisi Onyereri | University of Nigeria Faculty of Law |
| Joseph Ifeanyi Onyia | 4610051 | 2008 | Currently registered | Bronx, NY | Law Offices of Joseph Onyia | Fordham University School of Law |
| John Chike Onyido | 4298121 | 2005 | Currently registered | Lagos, Nigeria | Spa Ajibade & Co | |
| David C. Onyiuke | 4024030 | 2002 | Delinquent | East Orange, NJ | Nigerian Law School | |
| Anthony Michael Onyrscuk | 4554762 | 2007 | Currently registered | New York, NY | Paul Weiss Rifkind Wharton & Garrison LLP | University of Virginia School of Law |
| Katherine Pulley Onyshko | 5407010 | 2016 | Currently registered | Brooklyn, NY | U.S. Attorney’s Office - Eastern District of New York | Columbia Law School |
| Nicholas Oo | 5883301 | 2021 | Currently registered | New York, NY | Surveyor Capital | Yale Law School |
| Swang S Oo | 4515573 | 2007 | Resigned | Touro University Jacob D. Fuchsberg Law Center | ||
| Sameerah Oodally | 4537262 | 2007 | Currently registered | Cincinnati, OH | Zoo Games, Inc. | New York University School of Law |
| Martin H. Oogjen III | 2013134 | 1985 | Currently registered | Stetson University College of Law | ||
| Adrien Cedric Oost | 4863825 | 2010 | Currently registered | Cornell Law School | ||
| Paige Pauline Oostdyk | 5946496 | 2022 | Currently registered | New York, NY | Clark Smith Villazor LLP | Columbia Law School |
| Jennifer Christina Oosterbaan | 4736021 | 2009 | Currently registered | New York, NY | Jefferies LLC | Osgoode Hall Law School, York University |
| Olivier Dinant Oosterbaan | 4157210 | 2003 | Currently registered | DG Amsterdam, Netherlands | Leopold Meijnen Oosterbaan | Duke University School of Law |
| Arnold Cornelis Oosterholt | 1623099 | 1979 | Suspended, delinquent | Ar Amsterdam, Netherlands | Dutch Securities Institute | Columbia Law School |
| Douglas Jon Oosterhouse | 5473467 | 2016 | Resigned | Rutgers Law School | ||
| Huib Willem Oosterman | 6122436 | 2024 | Currently registered | Minneapolis, MN | Lat45 Law, PLLC | Mitchell Hamline School of Law |
| Peyton Elizabeth Oosterman | 5681275 | 2019 | Currently registered | Columbia Law School | ||
| Charlotte Fleury Oostwal | 6253462 | 2025 | Currently registered | New York, NY | Debevoise & Plimpton LLP | New York University School of Law |
| Leah Ann Oot | 3010162 | 2000 | Due to re‑register | Syracuse, NY | Oot and Associates | Syracuse University College of Law |
| Michael P. Oot | 1405927 | 1977 | Due to re‑register | East Syracuse, NY | Oot & Stratton | Western New England University School of Law |
| Patrick Leo Oot | 4017745 | 2002 | Currently registered | Washington, DC | Shook, Hardy, & Bacon LLP | Syracuse University College of Law |
| Suzanne E. Oot | 2481521 | 1992 | Currently registered | Manlius, NY | Oot Law Offices, PLLC | Syracuse University College of Law |
| Thomas M. Oot | 1805019 | 1982 | Resigned | Syracuse University College of Law | ||
| Adam Opaciuch | 2062172 | 1986 | Currently registered | California Western School of Law | ||
| John Opaciuch | 2062180 | 1986 | Currently registered | California Western School of Law | ||
| Nike Opeyemi Opadiran | 4575627 | 2008 | Currently registered | Washington, DC | Skadden Arps Slate Meagher and Flom LLP | Harvard Law School |
| Olatunde Gbadebo Opaleye | 3982840 | 2001 | Currently registered | Orange, NJ | ||
| Krystian Opalinski | 5163183 | 2013 | Currently registered | Rochester, NY | Monroe County Public Defenders Office | Syracuse University College of Law |
| Elizabeth Mary Opalka | 3032679 | 2000 | Due to re‑register | Albany Law School | ||
| Leonard Opanashuk | 2874790 | 1998 | Currently registered | Fredericksburg, VA | Motives Unlocked, LLC | University at Buffalo School of Law (SUNY) |
| Eric Mutongi Opanga | 4725990 | 2009 | Currently registered | Cary, NC | Epic Games | New York Law School |
| John Leo Opar | 1717248 | 1981 | Currently registered | University of Pennsylvania Carey Law School | ||
| Ijeoma Ihuaku Opara | 3035896 | 2000 | Currently registered | Houston, TX | The Opara Law Firm, PLLC | Thurgood Marshall School of Law, Texas Southern University |
| Roberta Chizoma Opara | 4775227 | 2010 | Delinquent | |||
| Crystal Oparaeke | 5641485 | 2018 | Delinquent | Dallas, TX | Akin Gump Strauss Hauer & Feld LLP | Howard University School of Law |
| Chika Nicole Oparaji | 5981618 | 2023 | Currently registered | New York, NY | Fried, Frank, Harris, Shriver & Jacobson LLP | Columbia Law School |
| Chizaram Modline Oparaji | 6263487 | 2025 | Currently registered | Washington, DC | World Bank Group | University of Nigeria Faculty of Law |
| Richard James Oparil | 2034684 | 1986 | Currently registered | Washington, DC | *Not Applicable | Case Western Reserve University School of Law |
| Oluwadunmininu Ifeoluwa Opasanya | 6225239 | 2025 | Currently registered | University of Warwick School of Law | ||
| Dustin Jay Opatosky | 5067228 | 2012 | Currently registered | Warren, NJ | Haleon | Fordham University School of Law |
| Robert Booth Opatrny | 1811009 | 1982 | Currently registered | New York University School of Law | ||
| Fowosimiloluwa Omoyosola Opayemi | 5305693 | 2015 | Currently registered | Lagos, Nigeria | Youverify Inc | Northwestern University Pritzker School of Law |
| Lilian Christine Opdam | 2381754 | 1991 | Currently registered | McGill University Faculty of Law | ||
| Conor Brian Opdebeeck Wilson | 5626056 | 2018 | Currently registered | Bruxelles, Belgium | Cleary Gottlieb Steen & Hamilton | University of Oxford Faculty of Law |
| Patrick Stephen Opdyke | 5419494 | 2016 | Currently registered | Stamford, CT | Philip Morris International | |
| Ryan Jeffrey Opeka | 5051677 | 2012 | Currently registered | San Francisco, CA | Jackson Square Aviation | Ohio State University Moritz College of Law |
| Andrew Robert Opel | 4144333 | 2003 | Currently registered | Greenwich, CT | Silver Point Capital | Boston University School of Law |
| William Patrick Opel | 5002175 | 2012 | Currently registered | Roseland, NJ | McManimon, Scotland & Baumann, LLC | Widener University School of Law |
| Glenn Adam Opell | 4308912 | 2005 | Currently registered | New York, NY | Opell Law P.C. | Brooklyn Law School |
| Gregg Evan Opell | 4298774 | 2005 | Currently registered | Huntington, NY | Sheps Law Group | New York Law School |
| Jill Allison Opell | 3952116 | 2001 | Currently registered | New York, NY | Foley & Lardner LLP | Fordham University School of Law |
| Robert Openhowski | 3992898 | 2002 | Currently registered | Warsaw, Poland | Kancelaria Openhowski | |
| Elliana Marie Openshaw | 5601653 | 2018 | Currently registered | Brooklyn Law School | ||
| Patricia Tan Openshaw | 2571107 | 1993 | Currently registered | UCLA School of Law | ||
| Olusola Adesola Opeola | 4527370 | 2007 | Currently registered | San Antonio, TX | Usaa | Harvard Law School |
| Felice Beth Oper | 2187516 | 1988 | Currently registered | New York University School of Law | ||
| Mahalia Linda Herrera Operario | 4919908 | 2011 | Currently registered | |||
| Daniel Marcus Operman | 4606414 | 2008 | Due to re‑register | Benjamin N. Cardozo School of Law, Yeshiva University | ||
| Dena Operman | 4316113 | 2005 | Currently registered | White Plains, NY | Fullerton Beck LLP | New York Law School |
| Jon Ian Opert | 2317766 | 1990 | Resigned | George Washington University Law School | ||
| Zana Operta | 5517669 | 2017 | Currently registered | New York, NY | Freshfields Bruckhaus Deringer LLP | Georgetown University Law Center |
| Christopher Robert Opfer | 4405817 | 2006 | Currently registered | New York, NY | Bloomberg Law | University of Miami School of Law |
| Jennifer Marie Opheim | 4296349 | 2005 | Currently registered | Newport Beach, CA | Pimco | University of Minnesota Law School |
| Daniel Joseph O’Phelan | 4432746 | 2006 | Suspended, delinquent | Keaau, HI | Attorney Dan O’Phelan | Mitchell Hamline School of Law |
| Gol Chaim Ophir | 2500114 | 1992 | Due to re‑register | Briarcliff Manor, NY | Nurtur, Inc. | Northeastern University School of Law |
| Johnathan Ophir | 4533345 | 2007 | Suspended, delinquent | Tel Aviv University Buchmann Faculty of Law | ||
| Mimi Ophir | 2498483 | 1992 | Currently registered | New York, NY | Kroll Bond Rating Agency, LLC | Boston University School of Law |
| Shlomit Ophir-Harel | 3068111 | 2000 | Currently registered | New York, NY | Law Offices of Shlomit Ophir-Harel, PLLC | Tel Aviv University Buchmann Faculty of Law |
| Joseph Patrick Opich | 2191286 | 1988 | Currently registered | New York, NY | Paul Hastings, LLP | University of Michigan Law School |
| Dina Opici | 2963734 | 1999 | Currently registered | Glen Rock, NJ | American B.D. Company | Benjamin N. Cardozo School of Law, Yeshiva University |
| Christopher Edward Opila | 6046494 | 2023 | Currently registered | Washington, DC | American Immigration Council | University of Michigan Law School |
| Irineo Ganzon Opina | 5544671 | 2017 | Delinquent | New Milford, NJ | ||
| Heidi E. Opinsky | 2034254 | 1986 | Currently registered | New York, NY | Law Offices of Heidi E. Opinsky, LLC | Maurice A. Deane School of Law at Hofstra University |
| Christopher Michael Opisso | 5222070 | 2014 | Due to re‑register | New York, NY | Volante Specialty Risk, LLC | St. John’s University School of Law |
| Daniel James Opisso | 5176714 | 2013 | Currently registered | Melville, NY | Daniel J. Opisso, Esq. | St. John’s University School of Law |
| Lawrence Nicholas Opisso | 4396792 | 2006 | Currently registered | Riverhead, NY | Suffolk County District Attorneys Office | St. John’s University School of Law |
| Viviane Christina Sidonie Opitz | 6336705 | 2026 | Currently registered | New York University School of Law | ||
| Edwin Carlis Opoku Jr | 4193272 | 2004 | Currently registered | New York, NY | Consolidated Edison | Seton Hall University School of Law |
| Emmanuel Opoku | 6245138 | 2025 | Currently registered | |||
| Lisa Fordwooh Opoku | 2800373 | 1997 | Currently registered | Philadelphia, NY | Future Standard | Harvard Law School |
| Jennifer Twumasi Opoku-Asare | 4574265 | 2008 | Delinquent | Burtonsville, MD | Asare Law Firm, LLC | New York Law School |
| Kevin Opoku-Gyamfi | 5720925 | 2019 | Currently registered | New York, NY | Braunhagey & Borden | Columbia Law School |
| Eugene Opoku-Serebuoh | 4766952 | 2010 | Currently registered | Maurice A. Deane School of Law at Hofstra University | ||
| Jeremy Robert Opolsky | 5065461 | 2012 | Currently registered | Toronto Ontario, Canada | Torys LLP | University of Toronto Faculty of Law |
| Abena Opong-Fosu | 6193957 | 2024 | Due to re‑register | Arlington, VA | Bloomberg Industry Group | |
| Akosua G Opong-Wiredu | 6188718 | 2024 | Currently registered | New York, NY | National Domestic Workers Alliance | Fordham University School of Law |
| Ma-Jasmine Sanson Oporto | 3893773 | 2000 | Currently registered | Cebu, Philippines | Ma Jasmine S. Oporto | |
| Juan Antonio Remulla Oposa | 5952676 | 2022 | Due to re‑register | Stanford Law School | ||
| Barbara Berger Opotowsky | 1300391 | 1972 | Currently registered | New York, NY | Barbara Berger Opotowsky | Fordham University School of Law |
| Stuart S. Opotowsky | 1180363 | 1972 | Currently registered | West Palm Beach, FL | Wayne State University Law School | |
| Robert Michael Opotzner | 2687937 | 1995 | Resigned | Duke University School of Law | ||
| Craig Allen Opp | 2967644 | 1999 | Currently registered | Minneapolis, MN | Rice Park Capital Management LP | Syracuse University College of Law |
| Emily Fuller Opp | 5071667 | 2012 | Due to re‑register | Philadelphia, PA | Akin Gump | Georgetown University Law Center |
| Karen Louise Limanen Opp | 2969772 | 1999 | Currently registered | Minneapolis, MN | Korn Ferry | Syracuse University College of Law |
| Carl Oppedahl | 1755099 | 1982 | Currently registered | Westminster, CO | Carl Oppedahl | Harvard Law School |
| David John Oppedisano | 4122701 | 2003 | Currently registered | University of San Diego School of Law | ||
| Gianni Oppedisano | 4363750 | 2005 | Currently registered | Purchase, NY | Oppedisano Law P.C. | Albany Law School |
| Isabella Oppedisano | 6179600 | 2025 | Currently registered | Purchase, NY | Harfenist Kraut & Perlstein, LLP | Elisabeth Haub School of Law at Pace University |
| Marilyn Vanessa Oppedisano | 4862108 | 2010 | Currently registered | Uniondale, NY | Law Offices of Richard Schoenberg | Fordham University School of Law |
| Margaret Serena Oppel | 3948056 | 1986 | Delinquent | Santa Barbara, CA | Law Office of Margaret Oppel | UCLA School of Law |
| Timothy Inwood Oppelt | 6071575 | 2023 | Currently registered | Glendale, CA | Styskal, Wiese & Melchione, LLP | Loyola Law School, Los Angeles |
| Matthew Paul Oppen | 5153085 | 2013 | Currently registered | Garden City, NY | Aronova & Associates | Touro University Jacob D. Fuchsberg Law Center |
| Adam Bradley Oppenheim | 3981594 | 2001 | Currently registered | New York, NY | Harris St. Laurent LLP | Columbia Law School |
| Adrienne Judith Oppenheim | 4452025 | 2007 | Currently registered | New York, NY | New York State Department of Financial Services | Brooklyn Law School |
| Avivith Oppenheim | 2301034 | 1989 | Currently registered | Benjamin N. Cardozo School of Law, Yeshiva University | ||
| Caroline P. Oppenheim | 2252823 | 1989 | Currently registered | Brooklyn Law School | ||
| Daniel Oppenheim | 4163382 | 2003 | Currently registered | New York, NY | Columbia Law School | |
| David Wayne Oppenheim | 3892874 | 2000 | Currently registered | Florham Park, NJ | Greenberg Traurig LLP | Widener University School of Law |
| James Nathan Oppenheim | 1827278 | 1981 | Due to re‑register | New York, NY | Acme Computing Inc | Brooklyn Law School |
| Jay Yitzhak M. Oppenheim | 5194642 | 2014 | Due to re‑register | Baltimore, MD | Saul Ewing LLP | St. John’s University School of Law |
| Jeffrey Alan Oppenheim | 1601350 | 1976 | Currently registered | New York, NY | Jeffrey A. Oppenheim, Esq. | Boston College Law School |
| Jerry Oppenheim | 1652452 | 1963 | Delinquent | New York, NY | Jerry Oppenheim | Brooklyn Law School |
| Jesse A Oppenheim | 5247507 | 2014 | Currently registered | Charlotte, NC | Technology Partners, LLC | Brooklyn Law School |
| Lanny Arthur Oppenheim | 1249218 | 1972 | Currently registered | Great Neck, NY | Lanny Arthur Oppenheim | Columbia Law School |
| Laura Adrienne Oppenheim | 2746659 | 1996 | Currently registered | New York, NY | C/O Mintz Law PLLC | Benjamin N. Cardozo School of Law, Yeshiva University |
| Leonard A. Oppenheim | 1549666 | 1977 | Suspended, delinquent | New York University School of Law | ||
| Louis Justin Oppenheim | 2273258 | 1983 | Currently registered | Scarsdale, NY | Headline Media Management, LLC | Fordham University School of Law |
| Lucille Cass Oppenheim | 1963636 | 1985 | Currently registered | White Plains, NY | Gutterman & Oppenheim | Elisabeth Haub School of Law at Pace University |
| Matthew Jan Oppenheim | 4314605 | 2005 | Currently registered | Washington, DC | Oppenheim & Zebrak, LLP | Cornell Law School |
| Mindy Ann Oppenheim | 2516573 | 1993 | Currently registered | Brooklyn Law School | ||
| Moshe Reuven Oppenheim | 2723765 | 1996 | Currently registered | Great Neck, NY | Victorian Group, LLC | St. John’s University School of Law |
| Robert Peter Oppenheim | 1673789 | 1980 | Currently registered | Cold Spring, NY | Robert P. Oppenheim, Esq. | Fordham University School of Law |
| Roy David Oppenheim | 2126233 | 1987 | Currently registered | Weston, FL | Oppenheim & Pilelsky PA | Northwestern University Pritzker School of Law |
| Sarah Harris Oppenheim | 4081741 | 2002 | Currently registered | New York, NY | Sarah Oppenheim | American University Washington College of Law |
| Seth Matthew Oppenheim | 4384145 | 2006 | Currently registered | University of Michigan Law School | ||
| Stephanie Elizabeth Oppenheim | 2179307 | 1988 | Due to re‑register | New York, NY | New York University School of Law | |
| Stephen L. Oppenheim | 1772748 | 1956 | Due to re‑register | New York, NY | Stephen L Oppenheim Esq | Cornell Law School |
| Andrew David Oppenheimer | 4786158 | 2010 | Currently registered | Buffalo, NY | Barclay Damon LLP | Syracuse University College of Law |
| Brooke Jones Oppenheimer | 4745139 | 2009 | Currently registered | Hartford, CT | Axinn, Veltrop & Harkrider LLP | New England Law Boston |
| Charles H. Oppenheimer | 1286335 | 1969 | Currently registered | Boynton Beach, FL | Charles H Oppenheimer | Cornell Law School |
| Daniel Jason Oppenheimer | 6035299 | 2023 | Currently registered | University of Chicago Law School | ||
| Deborah Elly Oppenheimer | 1921667 | 1984 | Suspended, delinquent | New York, NY | Brian J Oberman | |
| Elyssa Silverman Oppenheimer | 2372977 | 1990 | Currently registered | White Plains, NY | Fentin Goldman Turk and Davidoff LLP | Benjamin N. Cardozo School of Law, Yeshiva University |
| Gordon Seth Oppenheimer | 1240241 | 1966 | Currently registered | Larchmont, NY | Gordon S. Oppenheimer, Esq. | New York Law School |
| Joan Iris Oppenheimer | 1323450 | 1972 | Currently registered | Cornell Law School | ||
| Joshua L. Oppenheimer | 4467585 | 2007 | Currently registered | Albany, NY | Greenberg Traurig | Albany Law School |
| Leonard Y. Oppenheimer | 2859106 | 1998 | Due to re‑register | Brooklyn, NY | Leonard Oppenheimer, JD | Brooklyn Law School |
| Lori Segal Oppenheimer | 1932615 | 1984 | Currently registered | Fordham University School of Law | ||
| Marcy J. Oppenheimer | 2406072 | 1991 | Resigned | New York University School of Law | ||
| Mark V. Oppenheimer | 1831015 | 1982 | Suspended, delinquent | Mansfield, TX | Mark Vaughn Oppenheimer | |
| Martin Oppenheimer | 1076819 | 1957 | Due to re‑register | New York, NY | Proskauer, L.L.P. | Yale Law School |
| Martin Alan Oppenheimer | 1944578 | 1982 | Suspended, delinquent | New York, NY | Jewish Theological Seminary of America | Yale Law School |
| Michael D. Oppenheimer | 5456702 | 2016 | Due to re‑register | Chicago, IL | Erickson & Oppenheimer, LTD | University of Cincinnati College of Law |
| Michael Meyer Oppenheimer | 5387014 | 2016 | Due to re‑register | New York, NY | Morrison Cohen LLP | Maurice A. Deane School of Law at Hofstra University |
| Michael Scott Oppenheimer | 4765715 | 2009 | Suspended, delinquent | Washington DC, DC | Administrative Office of US Courts, Defender Services Office | CUNY School of Law |
| Nathaniel Joseph Oppenheimer | 5679915 | 2019 | Currently registered | Washington, DC | Covington & Burling LLP | Columbia Law School |
| Peter Hans Oppenheimer | 2515716 | 1993 | Resigned | Yale Law School | ||
| Randolph Carl Oppenheimer | 1770346 | 1980 | Currently registered | Case Western Reserve University School of Law | ||
| Ronald Steven Oppenheimer | 1848951 | 1983 | Currently registered | |||
| Sarah Eliza Oppenheimer | 6133680 | 2024 | Currently registered | Boston, MA | Entrada Therapeutics, Inc. | Boston College Law School |
| Thomas Oppenheimer | 6028013 | 2023 | Currently registered | Miami, FL | Fox Rothschild LLP | American University Washington College of Law |
| Thomas James Oppenheimer | 1749068 | 1974 | Suspended, delinquent | Springfield, MA | Thomas J Oppenheimer | Columbia Law School |
| Robert L. Oppenhein | 1213768 | 1962 | Resigned | UCLA School of Law | ||
| Stephan F. Oppenhoff | 2826360 | 1997 | Currently registered | Frankfurt Am Main, Germany | Linklaters LLP | New York University School of Law |
| Edward Andrew Opper | 2111151 | 1987 | Currently registered | Brooklyn, NY | Brooklyn Law School | |
| Joseph Opper | 1784339 | 1976 | Currently registered | Maurice A. Deane School of Law at Hofstra University | ||
| Loren Mark Opper | 1753474 | 1966 | Currently registered | Detroit, MI | Miller, Canfield, Paddock & Stone | Columbia Law School |
| Mark Steven Opper | 4172839 | 2003 | Suspended, delinquent | Boston, MA | Goodwin Procter LLP | University of Pennsylvania Carey Law School |
| Kathleen Mary Opperman | 2243269 | 1989 | Delinquent | New York Law School | ||
| Amanda Lee Oppermann | 5650809 | 2019 | Currently registered | Buffalo, NY | Journey’s End Refugee Services | University at Buffalo School of Law (SUNY) |
| Jan Philipp Oppermann | 4712154 | 2009 | Currently registered | Am Main, Germany | Interpublic Group Deutschland GMBH | William & Mary Law School |
| Mathieu Laurent Oppermann | 6128425 | 2024 | Currently registered | Paris, France | Wordstone Dispute Resolution Aarpi | |
| David Ernest Oppliger | 5331442 | 2015 | Currently registered | New York, NY | David E. Oppliger | University of Detroit Mercy School of Law |
| Jennifer McIntosh Ralph Oppold | 4591582 | 2008 | Suspended, delinquent | New York, NY | Select Equity Group | Harvard Law School |
| Paul Robert Oppold | 2261816 | 1989 | Suspended, currently registered | Charlotte, NC | Paul R. Oppold Esq. | Vanderbilt University Law School |
| Niccolo Oppoliti | 5636931 | 2018 | Due to re‑register | Columbia Law School | ||
| Jennifer Lynn Destefano Oppong | 4198743 | 2004 | Currently registered | New York, NY | Law Offices of Neal Rosenberg | Albany Law School |
| James Dale Oppy | 4302725 | 2005 | Suspended, delinquent | Albany, NY | The Law Firm of Alex C. Dell | Albany Law School |
| Selma Oprasic | 6006472 | 2023 | Currently registered | Brooklyn, NY | Legal Aid Society | Cornell Law School |
| Corina Oprea | 5820824 | 2020 | Currently registered | Chicago, IL | Mondelez International | Loyola University Chicago School of Law |
| Karen Elisabeth Oprea | 5087564 | 2013 | Currently registered | Austin, TX | The Law Office of Oprea & Weber | University of Michigan Law School |
| Oana Maria Oprean | 5610217 | 2018 | Currently registered | Paris, France | Solvo Capital | Harvard Law School |
| Patricia C. O’Prey | 4080461 | 2002 | Currently registered | Palisades, NY | Novolex | UC Law San Francisco (formerly UC Hastings) |
| Debra Ann Opri | 2846640 | 1997 | Currently registered | Beverly Hills, CA | Opri & Associates | Whittier Law School (closed) |
| Gabriel Opris | 6212344 | 2025 | Currently registered | Abu Dhabi, United Arab Emirates | Gibson Dunn & Crutcher LLP | |
| Irene M. Opsahl | 1859412 | 1982 | Resigned | |||
| Scott Leonard Optican | 2278273 | 1989 | Currently registered | Auckland, New Zealand | University of Auckland Faculty of Law | Harvard Law School |
| Onyinyechi Dorothy Oputa-Agoha | 5986609 | 2022 | Currently registered | Houston, TX | Oputa Agoha Law LLC | |
| Daniel Detrick Oquendo | 5676911 | 2019 | Currently registered | New York, NY | Jones Day | New York Law School |
| Marissa Elizabeth Oquendo | 5693148 | 2019 | Currently registered | New York, NY | Havas Media Group USA LLC | New York Law School |
Source: NY Office of Court Administration, attorney registration file (data.ny.gov, dataset eqw2-r5nb), downloaded Sep 29, 2026.