The following is an alphabetical
list of political families in the
United States whose last name begins with
O.
The O'Bannons
- Presley O'Bannon (1776-1850), member of the Kentucky Legislature. Ancestor of Lew O'Bannon.

- Lew O'Bannon, candidate for Lieutenant Governor of Indiana 1924, candidate for U.S. Senate from Indiana 1932. Descendant of Presley O'Bannon.

- Robert O'Bannon, Indiana State Senator 1951-1971. Son of Lew O'Bannon.

- Frank O'Bannon (1930-2003), Indiana State Senator 1971-1989, Lieutenant Governor 1989-1997, Governor of Indiana 1997-2003, delegate to the Democratic National Convention 2000. Son of Robert O'Bannon.

The Odells
- Benjamin Barker Odell, Sr., Mayor of Newburgh, New York. Father of Benjamin Barker Odell, Jr..

- Benjamin Barker Odell, Jr. (1854-1926), New York Republican Committeeman, U.S. Representative from New York 1895-1899, Governor of New York 1901-1904. Son of Benjamin Barker Odell, Sr..

The Ogles
- Alexander Ogle (1766-1832), Pennsylvania State Representative 1803-1804 1807-1808 1811 1819-1823, Clerk of Courts in Pennsylvania 1812-1817, U.S. Representative from Pennsylvania 1817-1819, Pennsylvania State Senator 1827-1828. Father of Charles Ogle.

- Charles Ogle (1798-1841), U.S. Representative from Pennsylvania 1837-1841. Son of Alexander Ogle.

The Ogles of Maryland
The Oglesbys
- Richard James Oglesby (1824-1899), candidate for U.S. Representative from Illinois 1858, Illinois State Senator, Governor of Illinois 1865-1869 1873 1885-1889, U.S. Senator from Illionis 1873-1879. Cousin of Woodson R. Oglesby.

- Woodson R. Oglesby (1867-1955), New York Assemblyman 1906, delegate to the Democratic National Convention 1912, U.S. Representative from New York 1913-1917. Cousin of Richard James Oglesby.

The Olins
The Olivers
- S. Addison Oliver (1833-1912), Iowa State Representative 1863-1864, delegate to the Republican National Convention 1864, Iowa State Senator 1865-1867, Circuit Court Judge in Iowa 1868-1875, U.S. Representative from Iowa 1875-1879. Father of Cyrus G. Oliver.

- Cyrus G. Oliver (1864-1929), Iowa State Representative 1923-1929. Son of S. Addison Oliver.

The O'Malleys
- Tom O'Malley, U.S. Attorney of District of Columbia 1957-1962. Father of Martin O'Malley.
- J. Joseph Curran, Jr. (1931-), Maryland House Delegate 1959-1963, Maryland State Senator 1963-1983, Lieutenant Governor of Maryland 1983-1987, Attorney General of Maryland 1987-2007. Father of Catherine Curran O'Malley.
The O'Neals
- Edward A. O'Neal (1818-1890), delegate to the Alabama Constitutional Convention 1875, Governor of Alabama 1882-1886. Father of Emmet O'Neal.

- Emmet O'Neal (1853-1922), Governor of Alabama 1911-1915, delegate to the Democratic National Convention 1912. Son of Edward A. O'Neal.

The O'Neills
- Thomas P. O'Neill, Jr. (1912-1994), candidate for City Council of Cambridge, Massachusetts 1935, Massachusetts State Representative 1936-1952, U.S. Representative from Massachusetts 1953-1987, Speaker of the U.S. House of Representatives 1977-1987. Father of Thomas P. O'Neil III.
- Thomas P. O'Neill III (1945-), Massachusetts State Representative, Lieutenant Governor of Massachusetts 1975-1980, delegate to the Democratic National Convention 1980. Son of Thomas P. O'Neill, Jr..
The O`Neills`s of Illinois
P.J O`Neill-Judge,lawyer
Mick Mchail-
5 time local elections canidate
The Oteros
- Miguel Antonio Otero (1829-1882), Attorney General of New Mexico Territory 1854-1856, U.S. Congressional Delegate from New Mexico Territory 1856-1861, delegate to the Democratic National Convention 1860, Secretary of New Mexico Territory 1861-1862, acting Governor of New Mexico Territory 1861-1862, candidate for U.S. Congressional Delegate from New Mexico Territory 1880. Father of Miguel Antonio Otero.

- Miguel Antonio Otero (1859-1944), Clerk of Las Vegas, New Mexico; Probate Clerk in New Mexico Territory; Clerk of San Miguel County, New Mexico; Governor of New Mexico Territory 1897-1906; Treasurer of New Mexico Territory 1909-1911; candidate for Republican nomination for Governor of New Mexico 1912; U.S. Marshal of the Panama Canal 1917-1921. Son of Miguel Antonio Otero.

- Mariano S. Otero (1844-1904), Probate Judge of Bernalillo County, New Mexico 1871-1879; U.S Congressional Delegate from New Mexico Territory 1879-1881; Commissioner of Bernalillo County, New Mexico 1884-1886; candidate for U.S. Congressional Delegate from New Mexico Territory 1888 1890. Nephew of Miguel Antonio Otero.

- Miguel Antonio Otero, Jr. (1892-1977), District Court Judge in Santa Fe, New Mexico. Son of Miguel Antonio Otero.
NOTE: Miguel Antonio Otero was also son-in-law of Minnesota Supreme Court Justice Lafayette Emmett.
The Outlaws
- George Outlaw, member of the North Carolina House of Commons 1796-1797, North Carolina State Senator 1802-1806 1808-1810 1814 1817 1821-1822, U.S. Representative from North Carolina 1825. Cousin of David Outlaw.

- David Outlaw (1806-1868), North Carolina State Representative 1831-1834 1854 1858, delegate to the North Carolina Constitutional Convention 1835, Solicitor in North Carolina 1836-1844, U.S. Representative from North Carolina 1847-1853. Cousin of George Outlaw.
