Educational magazines
- Orenstein, Ronald I. 1946-
- Orent, Wendy
- Orfalea, Gregory 1949–
- Orfalea, Paul 1947–
- Orgel, Doris 1929-
- Orgel, Stephen 1933–
- Originally
- Orizet, Jean 1937–
- Orizio, Riccardo 1961-
- Orlandersmith, Dael 1960-
- Orlando, Tony 1944-
- OrléANS, Marion (de Bourbon) d' 1941-
- Orléans, Thibaut (Louis Denis Humbert de Bourbon) d' 1948-1983
- Orleck, Annelise 1959-
- Orloff, Judith 1951-
- Orlova, Alexandra 1911–
- Orman, Suze 1951(?)–
- Orme, Nicholas
- Ormsby, Eric (Linn) 1941-
- Ormsby, Frank 1947-