- Orthanc
- Ortheia Barnes
- Ortho
- Orthodox
- Orthodox Issachar
- Orthotonics
- Orthrelm
- Orthrus
- Ortiga
- Ortin Cam
- Ortin Cam
- Ortinho
- Ortinho Ortinho
- Ortiz
- Ortiz DePinedo
- Ortiz Tirado
- Ortner-Roberts
- Orto
- Orto
- Ortolan
- Ortolan
- Ortolani
- Orton Socket
- Ortopilot
- Ortrun Wenkel
- Ortsen
- Ortus
- Ortwin Stürmer
- OrtzRoka
- Orú Cantado
- Oruç Türker Özger
- Oruç Güvenç and Tümata
- Oruga
- Orujo De Brujas
- Orukusaki
- Orup
- Orup
- Orval Carlos Sibelius
- Orval Hale
- Orvar Kristjansson
- Orville Davis
- Orville Giddings
- Orville J. Jenks
- Orville Johnson
- Orville Lunsford
- Orville Mendoza
- Orville Neeley
- Orville Reed
- Orville Stoeber
- Orville Thomas
- Orville Wood
- Orville "Woody" Wood