Boy's name with O
- Oliver
- Oscar
- Owen
- Omar
- Orlando
- Ollie
- Otto
- Olaf
- Orion
- Otis
- Oswald
- Olive
- Olivier
- Orville
- Odin
- Advertisement
- Octavio
- Obama
- Oman
- Osvaldo
- Osman
- Oren
- Osama
- Oleg
- Oden
- Oran
- Orin
- Orson
- Octavian
- Oskar
- Ole
- Orpheus
- Oakley
- Omen
- Olsen
- Oslo
- Ola
- Orwell
- Ozzie
- Obi
- Osiris
- Ocean
- Opal
- Orland
- Odell
- Olson
- Onyx
- Odis
- Oak
- Oedipus
- Olin
- Orrin
- Octave
- Odysseus
- Oberon
- Obadiah
- Osmond
- Otter
- Omid
- Orly
- Olav
- Advertisement
- Oxford
- Olga
- O'Neil
- Osborn
- Owain
- Olen
- Ogden
- Oneal
- Oven
- October
- Orlando Bloom
- Osama Bin Laden
- Oval
- Oily
- Orton
- Omega
- O'Brien
- Octopus
- Oppenheimer
- Ontario
- Ono
- Oakland
- Oro
- Osborne
- OJ Simpson
- Oleander
- Organ
- Ota
- Ovid
- Ortho
- Obey
- Ora
- Oracle
- Oriel
- Onno
- Ormond
- O'Reilly
- Omri
- O'Connor
- Osbert
The words in the list Boy's name with O come from players of the word game Categories game.