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