Skip to main content - Ormani, Maria (fl. 1453)
- Ormerod, Eleanor A. (1828–1901)
- Orpah (fl. 1100 BCE)
- Orr, Alice Greenough (1902–1995)
- Orsini, Belleza (d. 1528)
- Orthryth of Mercia (fl. 7th c.)
- Ortíz de Dominguez, Josefa (c. 1768–1829)
- Ortiz, Cristina (1950—)
- Ortrud of Schleswig-Holstein-Sonderburg-Glucksburg (1925—)
- Orzeszkowa, Eliza (1841–1910)
- Osborn, Emily Mary (1834–c. 1885)
- Osborne, Dorothy (1627–1695)
- Osborne, Margaret (1918—)
- Osborne, Mary (1921–1992)
- Osborne, Susan M. (1858–1918)
- Osburga (?–c. 855)
- Osburn, Lucy (1835–1891)
- Osgood, Frances (1811–1850)
- Osmanoglu, Gevheri (1904—)
- Osten, Maria (1908–1942)
