| Bridget M. O'Brien | Cleveland Municipal Court | – |
| Casey P. O'Brien | Ashtabula County Court | – |
| Charles H. O'Brien | Tenn. | 1987–1994 |
| Cornelius J. O'Brien | N.Y. App. Div. | 1990–2003 |
| Dennis D O'Brien | Bankr. D. Minnesota | 1985–2013 |
| Donald Eugene O'Brien | S.D. Iowa | 1978–1990 |
| Ernest Aloysius O'Brien | E.D. Michigan | 1931–1948 |
| Gregory C., Jr. O'Brien | Superior Court of California, County of Los Angeles | 1987–2005 |
| Henry X. O'Brien | Pa. | 1962–1983 |
| Katherine O'brien | New York City Civil Court, Bronx County | – |
| Mary K. O'Brien | Ill. | 2022– |
| Maryann C. O'Brien | Superior Court of New Jersey, Burlington Vicinage | – |
| Robert H. O'Brien | Superior Court of California, County of Los Angeles | 1981–1999 |
| Sean J. O'Brien | Trumbull County Court of Common Pleas | – |
| Tammy O'Brien | Summit County Court of Common Pleas | – |
| Terrence L. O'Brien | Tenth Circuit | 2002– |
| Timothy W. O'Brien | Superior Court of California, County of Mendocino | 1971–1985 |
| Ambrose O'Connell | C.C.P.A. | 1944–1962 |
| Annie O'Connell | Jefferson Circuit Court | – |
| Beverly Reid O'Connell | C.D. California | 2013–2017 |
| Beverly Reid O'Connell | Superior Court of California, County of Los Angeles | 2005–2013 |
| Edward Y. O'Connell | Conn. App. Ct. | 1987–2000 |
| Jeremiah Edward O'Connell | R.I. | 1948–1956 |
| John Joseph O'Connell | Third Circuit | 1945–1949 |
| Kenneth J. O'Connell | Or. | 1958–1977 |
| Peter D. O'Connell | Mich. Ct. App. | 1994– |
| Stephen Cornelious O'Connell | Fla. | 1955–1967 |
| Timothy N. O'Connell | Montgomery County Court of Common Pleas | – |
| Earl Eugene O'Connor | D. Kansas | 1971–1998 |
| Earl Eugene O'Connor | Kan. | 1965–1971 |
| Francis Patrick O'Connor | Mass. | 1981–1997 |
| Frank D. O'Connor | N.Y. App. Div. | 1976–1986 |
| James Francis Thaddeus O'Connor | S.D. California | 1940–1949 |
| James P O'connor | Suffolk County Family Court | – |
| Kathleen Rose O'Connor | Superior Court of California, County of Yuba | 2002– |
| Kevin J. O'Connor | Superior Court of New Jersey, Essex Vicinage | – |
| Kimberly A O'Connor | New York Court of Claims | – |
| Maureen O'Connor | Ohio | 2003– |
| Reed Charles O'Connor | N.D. Texas | 2007– |
| Sandra Day O'Connor | Supreme Court | 1981–2006 |
| Sandra Day O'Connor | Ariz. Ct. App. | 1979–1981 |
| Robert J. O'Conor Jr. | S.D. Texas | 1975–1984 |
| Thomas M. O'Diam | Greene County Court of Common Pleas | – |
| Colin F O'Donnell | Nassau County Court | – |
| Deanna O'Donnell | Parma Municipal Court | – |
| James P. O'Donnell | N.Y. App. Div. | 1983–1986 |
| Jennifer L. O'Donnell | Cuyahoga County Court of Common Pleas | – |
| Joanne B. O'Donnell | Superior Court of California, County of Los Angeles | 2000–2016 |
| John O'Donnell | Lake County Court of Common Pleas | – |
| John P. O'Donnell | Cuyahoga County Court of Common Pleas | – |
| Sean Patrick O'Donnell | King County Superior Court | – |
| Terrance O'Donnell | Ohio | 2003– |
| Terrence O'Donnell | Ohio Ct. App. | 1995–2003 |
| William J. O'Donnell | Md. | 1974–1976 |
| Daniel William O'Donoghue | D.D.C. | 1932–1948 |
| Patricia O'Dowd | Superior Court of New Jersey, Morris/Sussex Vicinage | – |
| John D. O'Dwyer | Superior Court of New Jersey, Bergen Vicinage | – |
| Robert A. O'Farrell | Superior Court of California, County of Monterey | 1981–2009 |
| Joseph O'Flaherty | Superior Court of California, County of Placer | 1998–2013 |
| Michael John O'Gara | Superior Court of California, County of Los Angeles | 2009– |
| Donald G O'Geen | Wyoming County Court | – |
| Travis P. O'Gorman | Box Butte County District Court | – |
| James P. O'Grady | Franklin County Municipal Court | – |
| Liam O'Grady | E.D. Virginia | 2007–2023 |
| James P. O'Hara | D. Kansas | 2000– |
| Michael D. O'Hara | Mich. | 1963–1968 |
| Christine Patricia O'Hearn | D. New Jersey | 2021– |
| Daniel Joseph O'Hern | N.J. | 1981–2000 |
| Joseph Scott O'Keefe | Court of Common Pleas of Philadelphia County | – |
| William Clark O'Kelley | N.D. Georgia | 1970–2017 |
| Kathleen Elizabeth O'Leary | Cal. Ct. App. | 2000– |
| Jennifer L. O'Malley | Cuyahoga County Court of Common Pleas | – |
| Jill G. O'Malley | Superior Court of New Jersey, Monmouth Vicinage | – |
| Kathleen McDonald O'Malley | Federal Circuit | 2010–2022 |
| Martin J. O'Malley | Ind. | 1943–1949 |
| Mary Ann O'Malley | Superior Court of California, County of Contra Costa | 2009–2010 |
| Thomas F. O'Malley | Cuyahoga County Court of Common Pleas | – |
| William A. O'Malley | Superior Court of California, County of Contra Costa | 1985–2006 |
| John Corbett O'Meara | E.D. Michigan | 1994–2024 |
| Cecil Talmadge O'Neal | Okla. | 1949–1955 |
| Inga M O'Neale | New York Supreme Court, 2nd Judicial District | – |
| John Belton O'Neall | S.C. | 1859 |
| Stephen E. O'Neil | Superior Court of California, County of Los Angeles | 1989–2001 |
| Thomas Newman O'Neill Jr. | E.D. Pennsylvania | 1983–2018 |
| C William O'Neill | Ohio | 1960–1978 |
| Harriet O'Neill | Tex. | 1999–2010 |
| Lawrence Joseph O'Neill | E.D. California | 2007– |
| Lawrence Joseph O'Neill | Superior Court of California, County of Fresno | 1990–1998 |
| Robert F. O'Neill | Superior Court of California, County of San Diego | 1999– |
| Steven T. O'Neill | Court of Common Pleas of Montgomery County | – |
| Suzanne C. O'Neill | Marathon County Circuit Court | – |
| Thomas J. O'Neill | Connecticut Superior Court | – |
| Vincent J., Jr. O'Neill | Superior Court of California, County of Ventura | 2011–2012 |
| William Michael O'Neill | Ohio | 2013– |
| Charles Austin O'NIELL | La. | 1914–1949 |
| Gail Angela O'Rane | Superior Court of California, County of Riverside | 2013– |
| John G. O'Rourke | Superior Court of California, County of Kings | 2001–2003 |
| Terry Byron O'Rourke | Superior Court of California, County of San Diego | 1987–1998 |
| Diarmuid Fionntain O'Scannlain | Ninth Circuit | 1986– |
| Clifford Patrick O'Sullivan | Sixth Circuit | 1960–1975 |
| John J. O'Sullivan | S.D. Florida | 1999– |
| Patrick Brett O'Sullivan | Conn. | 1950–1957 |
| Patrick J O'Sullivan | New York Supreme Court, 6th Judicial District | – |
| George A. O'Toole Jr. | D. Massachusetts | 1995– |
| Colleen Mary O'Toole | Ohio Ct. App. | 2004–2011 |
| Elizabeth M. O'Donnell | 7th Judicial District Court | – |
| Ann Clare Oakar | Cleveland Municipal Court | – |
| James Lowell Oakes | Second Circuit | 1971–2007 |
| Natalia Cokinos Oakes | Texas 313th District Court | – |
| Timothy W. Oakes | Marion Superior Court | – |
| James E. Oakley | Superior Court of California, County of Madera | 1988–2010 |
| Dallin Harris Oaks | Utah | 1980–1984 |
| Richard L. Obendorf | DeKalb Superior Court | – |
| Louis Falk Oberdorfer | D.D.C. | 1977–2013 |
| Daphne A. Oberg | D. Utah | 2020– |
| David B. Oberholtzer | Superior Court of California, County of San Diego | 2002–2020 |
| Richard J. Oberholzer | Superior Court of California, County of Kern | 1987–2008 |
| Sheila K. Oberto | E.D. California | 2010– |
| Derek Uchechukwu Obialo | Texas 240th District Court | – |
| David A. Oblon | Fairfax Circuit Court | – |
| Grace ObomaLayat | Bronx County Family Court | – |
| Christopher J Obstarczyk | New York Supreme Court, 4th Judicial District | – |
| Ricardo Roces Ocampo | Superior Court of California, County of Los Angeles | 2008– |
| Frank J. Ochoa | Superior Court of California, County of Santa Barbara | 1997–2015 |
| Gilbert Glen Ochoa | Superior Court of California, County of San Bernardino | 2007– |
| Vincent Ochoa | Eighth Judicial District Court | – |
| Donald E. Oda | Warren County Court of Common Pleas | – |
| David P. Odekirk | 1st Judicial District Court | – |
| Kurt S. Odenwald | Mo. Ct. App. | 2007– |
| Archie Odom | Fla. Dist. Ct. App. | 1960–1967 |
| Frederick M. Odom | La. | 1931–1944 |
| Troy Odom | 20th Chancery Court District | – |
| Wendell Albert Odom | Tex. Crim. App. | 1971–1984 |
| J Scott Odorisi | New York Court of Claims | – |
| Maria L. Oesterreicher | Circuit Court for Carroll County | – |
| Cynthia Oetjen | Marion Superior Court | – |
| James Paul Oetken | S.D. New York | 2011– |
| T Scott Offutt | Md. | 1920–1942 |
| Eleanora Ofshtein | New York City Housing Court, New York County | – |
| Thomas S. Ogata | Haw. | 1974–1981 |
| E Jeannette Ogden | New York Supreme Court, 8th Judicial District | – |
| Lauren Adams Ogden | Jefferson Circuit Court | – |
| Richard Ogden | Oklahoma County District Court | – |
| Steven D. Ogden | Superior Court of California, County of Los Angeles | 1999–2014 |
| Jack L. Ogg | Ariz. Ct. App. | 1973–1985 |
| Isaac Stockton Keith Ogier | S.D. California | 1854–1861 |
| Andrea S Ogle | New York Supreme Court, 11th Judicial District | – |
| Norma Mcgee Ogle | Tenn. Crim. App. | 1998– |
| Beau Hendrick Oglesby | Circuit Court for Worcester County | – |
| Christopher B. Oglesby | Hopkins Circuit Court | – |
| John D. Oglesby | Superior Court of California, County of Kern | 2000– |
| Sandra Gardebring Ogren | Minn. | 1991–1998 |
| Lola OguntundeWaterman | New York City Civil Court, Kings County | – |
| Gail D. Ohanesian | Superior Court of California, County of Sacramento | 1998–2008 |
| Aram M. Ohanian | Perrysburg Municipal Court | – |
| Kevin A Ohlson | Armed Forces | 2011– |
| Ralph Ohm | Eighteenth East Judicial Circuit Court | – |
| Peter Ohman | Eighteenth Judicial District Court | – |
| Jinsook Ohta | S.D. California | 2021– |
| Sam Ohta | Superior Court of California, County of Los Angeles | 2000– |
| Patrick H Oishi | King County Superior Court | – |
| Vincent Hichiro Okamoto | Superior Court of California, County of Los Angeles | 2002–2020 |
| Edirin O Okoloko | Snohomish County Superior Court | – |
| Richard T Okrent | Snohomish County Superior Court | – |
| Neil P. Olack | Bankr. S.D. Mississippi | 2006– |
| William D. Old III | Texas 25th District Court | – |
| Margaret Lynn Oldendorf | Superior Court of California, County of Los Angeles | 2005– |
| Charles H. Older | Superior Court of California, County of Los Angeles | 1968–1987 |
| Joy Malek Oldfield | Summit County Court of Common Pleas | – |
| Andrew Stephen Oldham | Fifth Circuit | 2018– |
| Jon A. Oldham | Akron Municipal Court | – |
| Walter Olds | Ind. | 1889–1893 |
| Jerry C. Oldshue Jr. | Bankr. S.D. Alabama | 2015– |
| Michael J. Olejasz | West Virginia Circuit Court | – |
| Lori Olender | Lucas County Court of Common Pleas | – |
| Welsey J. Oler Jr. | Pa. Commw. Ct. | 2012– |
| Susan Olgiati | Superior Court of New Jersey, Cumberland/Gloucester/Salem Vicinage | – |
| Fernando Manzano Olguin | C.D. California | 2013– |
| Abram Baldwin Olin | D.D.C. | 1863–1879 |
| A Dayton Oliphant | N.J. | 1948–1957 |
| Caroline Oliveira | Superior Court of New Jersey, Morris/Sussex Vicinage | – |
| Solomon Oliver Jr. | N.D. Ohio | 1994– |
| Arlene AGordon Oliver | Westchester County Family Court | – |
| Bonnie Chessher Oliver | Superior Court of Georgia, Northeastern Judicial Circuit | – |
| Jerrold S. Oliver | Superior Court of California, County of Orange | 1974–1989 |
| John Watkins Oliver | W.D. Missouri | 1962–1990 |
| Katherine V. Oliver | Court of Common Pleas of Centre County | – |
| Ralph A. Oliver | Iowa | 1938–1962 |
| Robert H. Oliver | Superior Court of California, County of Fresno | 1998–2015 |
| Rozella A. Oliver | C.D. California | 2015– |
| Vernon Dion Oliver | D. Connecticut | 2023– |
| Webster J. Oliver | Customs Ct. | 1940–1969 |
| William "Bill" Oliver | Superior Court of Georgia, Mountain Judicial Circuit | – |
| Elizabeth Ufkes Olivera | Superior Court of California, County of Colusa | 2010–2019 |
| Lara Olivieri | Ulster County Family Court | – |
| Charlaine F. Olmedo | Superior Court of California, County of Los Angeles | 2002– |
| Mario G. Olmos | Superior Court of California, County of Fresno | 1983–1990 |
| Garrett W. Olney | Superior Court of California, County of Plumas | 1998–2007 |
| Warren Olney | Cal. | 1919–1921 |
| Bradley G. Olson Jr. | Court of Common Pleas of Lawrence County | – |
| Gregory Jerome Olson | Superior Court of California, County of Riverside | 2018– |
| John K. Olson | Bankr. S.D. Florida | 2006–2020 |
| Judith Ference Olson | Pa. Super. Ct. | 2010– |
| Julius J. Olson | Minn. | 1934–1948 |
| Justin Ross Olson | S.D. Indiana | 2026– |
| Lester E. Olson | Superior Court of California, County of Los Angeles | 1966–1985 |
| Lonnie Olson | Northeast Judicial District Court | – |
| Lynn Diane Olson | Superior Court of California, County of Los Angeles | 2007– |
| Ralph O. Olson | Wash. | 1951–1955 |
| Robert E Olson | Whatcom County Superior Court | – |
| Robert M. Olson | Superior Court of California, County of Los Angeles | 1972–1995 |
| Walter J. Olszewski | Court of Common Pleas of Philadelphia County | – |
| Jose Rolando Olvera Jr. | S.D. Texas | 2015– |
| LaFel Earl Oman | N.M. | 1971–1977 |
| Michele Satterelli Oncken | Texas 338th District Court | – |
| Robert S Ondrovic | New York Supreme Court, 9th Judicial District | – |
| James J. Ong | Tuscarawas County Court | – |
| Tomson Tio Ong | Superior Court of California, County of Los Angeles | 2000– |
| Rafael Astraquill Ongkeko | Superior Court of California, County of Los Angeles | 2002– |
| John Frank Onion Jr. | Tex. Crim. App. | 1967–1988 |
| Angelo Onofri | Superior Court of New Jersey, Mercer Vicinage | – |
| Marian P. Opala | Okla. | 1978–2010 |
| Robert N. Opel II | Bankr. M.D. Pennsylvania | 2006– |
| Peter A. Oppeneer | W.D. Wisconsin | 2009– |
| Reuben Oppenheimer | Md. | 1964–1967 |
| Clarence V. Opper | Tax Ct. | 1942–1965 |
| Daniel S. Opperman | Bankr. E.D. Michigan | 2006– |
| James R. Oppliger | Superior Court of California, County of Fresno | 2003–2010 |
| Aimee A. Oravec | Alaska | 2025– |
| Scott Oravec | D. Alaska | 2009– |
| Charlotte J. Orcutt | Superior Court of California, County of San Joaquin | 2005– |
| Joaquin E Orellana | New York City Civil Court, Bronx County | – |
| James Orenstein | E.D. New York | 2004–2020 |
| Adrienne A. Orfield | Superior Court of California, County of San Diego | 1998–2020 |
| Franklin B. Orfield | Superior Court of California, County of San Diego | 1969–1988 |
| Michael B. Orfield | Superior Court of California, County of San Diego | 1998–2009 |
| Melvin Orfinger | Fla. Dist. Ct. App. | 1979–1989 |
| Richard Orfinger | Fla. Dist. Ct. App. | 2000– |
| Tiffany E. Organ-Bowles | Superior Court of California, County of Kern | 2017– |
| Christine S. Orlando | Superior Court of New Jersey, Camden Vicinage | – |
| Rosann O Orlando | Suffolk County District Court | – |
| Stephen Murray Orlofsky | D. New Jersey | 1995–2003 |
| Jodi Orlow | New York Supreme Court, 11th Judicial District | – |
| Gregory K. Orme | Utah Ct. App. | 1987– |
| Peter E. Ormsby | S.D. Texas | 2005– |
| George Orndoff | Superior Court of California, County of Kings | 2001–2013 |
| Lawrence Edward Ornell | Superior Court of California, County of Sonoma | 2013– |
| Delbert William Oros | Superior Court of California, County of Sacramento | 2007– |
| Gary Rico Orozco | Superior Court of California, County of Fresno | 2001– |
| Patricia A. Orozco | Ariz. Ct. App. | 2004– |
| Yolanda Orozco | Superior Court of California, County of Los Angeles | 2010– |
| Charles Prentiss Orr | W.D. Pennsylvania | 1909–1922 |
| Joseph A. Orr | Superior Court of California, County of Mendocino | 1998–2001 |
| Mark E. Orr | Mo. Ct. App. | 2006–2014 |
| Robert F. Orr | N.C. | 1994–2004 |
| Warren H. Orr | Ill. | 1930–1939 |
| William Edwin Orr | Ninth Circuit | 1945–1965 |
| William Edwin Orr | Nev. | 1939–1945 |
| William Horsley Orrick III | N.D. California | 2013– |
| William Horsley Orrick Jr. | N.D. California | 1974–2003 |
| Dawn M Orsatti | Kings County Family Court | – |
| Matthew Emile Orso | W.D. North Carolina | 2025– |
| Darleen Ortega | Or. Ct. App. | 2003– |
| Reuben A. Ortega | Cal. Ct. App. | 1984–2004 |
| Charles E. Orth Jr. | Md. | 1976–1980 |
| Revius Ortique Jr. | La. | 1993–1994 |
| Elia Ortiz | Superior Court of California, County of Napa | 2012–2019 |
| Frances A Ortiz | New York City Housing Court, Kings County | – |
| Javier Ortiz | New York City Civil Court, Kings County | – |
| Javier E Ortiz | New York City Housing Court, Kings County | – |
| Craig J Ortner | New York City Criminal Court, Bronx County | – |
| Andrew L. Osborn | Ind. | 1871–1875 |
| James B. Osborn | Marion Superior Court | – |
| Walter , Jr. Osborn | Superior Court of California, County of Kern | 1965–1983 |
| Earl T. Osborne | Ky. | 1967–1975 |
| Edwin M. Osborne | Superior Court of California, County of Ventura | 1986–1994 |
| Leslie Lester Osborne | Tex. App. | 2019–2024 |
| Judith E Osburn | Binghamton City Court | – |
| Benny C. Osorio | Superior Court of California, County of Los Angeles | 2008–2018 |
| Thomas J. Osowik | Ohio Ct. App. | 2007– |
| Frank Ospino | Superior Court of California, County of Orange | 2015– |
| Jamie Marie Oss | LaPorte Superior Court | – |
| Carolyn S. Ostby | D. Montana | 2002– |
| William Lindsay Osteen Jr. | M.D. North Carolina | 2007– |
| William Lindsay Osteen Sr. | M.D. North Carolina | 1991–2007 |
| Michael A. Oster Jr. | Butler County Court of Common Pleas | – |
| Kristine A. Osterday | Elkhart Superior Court | – |
| Timothy T. Osterhaus | Fla. Dist. Ct. App. | 2013– |
| Michael R. Ostrowski Jr. | Superior Court of New Jersey, Cumberland/Gloucester/Salem Vicinage | – |
| Nicholas Ostuni | Superior Court of New Jersey, Bergen Vicinage | – |
| Jill Aiko Otake | D. Hawaii | 2018– |
| Alicia Otazo-Reyes | S.D. Florida | 2012– |
| S. James Otero | C.D. California | 2003–2020 |
| S. James Otero | Superior Court of California, County of Los Angeles | 1990–2003 |
| Michael Oths | Idaho District Court | – |
| James C. Otis | Minn. | 1961–1982 |
| Merrill E. Otis | W.D. Missouri | 1925–1944 |
| John E. Ott | N.D. Alabama | 1998– |
| Paula Francisco Ott | Pa. Super. Ct. | 2010– |
| Richard B. Ott | Wash. | 1955–1967 |
| T Truett Ott | Fla. Dist. Ct. App. | 1977–1985 |
| John J OttavianoJr | Niagara County Court | – |
| Frank J Otte | Bankr. S.D. Indiana | 1986–2014 |
| Peter Keith Ottenweller | Superior Court of California, County of Sonoma | 2010– |
| Douglas B. Ottinger | Portsmouth Circuit Court | – |
| Lisa S Ottley | New York Supreme Court, 2nd Judicial District | – |
| James Daniel Otto | Superior Court of California, County of Los Angeles | 2003– |
| Daniel Alexander Ottolia | Superior Court of California, County of Riverside | 2010– |
| John W. Ouderkirk | Superior Court of California, County of Los Angeles | 1991–2004 |
| Daniel L. Overbey | Vilas County Circuit Court | – |
| Jenifer K. Overmyer | Preble County Court of Common Pleas | – |
| David K. Overstreet | Ill. | 2020– |
| Karen A Overstreet | Bankr. W.D. Washington | 1994–2015 |
| Morris L. Overstreet | Tex. Crim. App. | 1990–1998 |
| Murray Overstreet | Fla. Dist. Ct. App. | 1960–1975 |
| Ben F. Overton | Fla. | 1974–1999 |
| Carol Weinstein Overton | Superior Court of California, County of Santa Clara | 2005– |
| Paul E. Overton | Superior Court of California, County of San Diego | 1973–1991 |
| William Ray Overton | E.D. Arkansas | 1979–1987 |
| Sharon L. Ovington | S.D. Ohio | 2002– |
| Knoel L. Owen | Superior Court of California, County of Sonoma | 1998–2009 |
| Molly Owen | Twentieth Judicial District Court | – |
| Priscilla Richman Owen | Tex. | 1995–2005 |
| Richard Owen | S.D. New York | 1973–2015 |
| Ronald Eugene Owen | Superior Court of California, County of Orange | 1981–2001 |
| Steven L. Owen | Orange Circuit Court | – |
| Wilbur Dawson Owens Jr. | M.D. Georgia | 1972–2010 |
| Beth Allen Owens | Richland County Court of Common Pleas | – |
| Claude M. Owens | Superior Court of California, County of Orange | 1967–1981 |
| Donald S. Owens | Mich. Ct. App. | 1999– |
| John Byron Owens | Ninth Circuit | 2014– |
| Karen Owens | Bankr. D. Delaware | 2019– |
| Susan Owens | Wash. | 2001 |
| Brian L Owsley | S.D. Texas | 2005–2013 |
| Perry L. Owsley | Kan. | 1971–1978 |
| Leo Oxberger | Iowa Ct. App. | 1969–1994 |
| Maria L. Oxholm | Bankr. E.D. Michigan | 2016– |
| Dana Oxley | Iowa | 2020– |
| Joseph W. Oxley | Superior Court of New Jersey, Monmouth Vicinage | – |
| G. Dewey Oxner | S.C. | 1944–1962 |
| Sheila A. Ozalis | Connecticut Superior Court | – |
| Halil Suleyman Ozerden | S.D. Mississippi | 2007– |
| Wayne M Ozzi | New York Supreme Court, 13th Judicial District | – |