person name with O
- Oliver
- Olivia
- Oscar
- Owen
- Omar
- Olive
- Ollie
- Orlando
- Otto
- Olga
- Olaf
- Oswald
- Obama
- Olly
- Oprah
- Otis
- Opal
- Octavia
- ophelia
- Octavio
- Orion
- oliva
- Oli
- Osvaldo
- Ola
- Orville
- Oman
- Osman
- odin
- Olivier
- Osama
- Orla
- Ozzy
- Omkar
- Othello
- Oriana
- Oskar
- Omer
- Oswaldo
- Oakley
- Octavius
- Oleg
- Ole
- Oren
- omen
- Olsen
- Oran
- Otavio
- Opra
- Octavious
- Orin
- Odette
- Osiris
- Olivia Rodrigo
- Octavian
- Opera
- Orly
- olie
- Olivander
- OJ Simpson
- Orwell
- Ornella
- ocean
- Orazio
- Orianna
- orson
- Orlando Bloom
- Omarion
- omari
- Oggy
- Orhan
- Otter
- Olliver
- Oma
- Oslo
- octopus
- oracio
- Ori
- Ofelia
- orland
- Ozzie
- Owen Wilson
- Opie
- Olek
- Oviya
- Olympia
- Ophilia
- Orpheus
- Ottis
- Olson
- Oden
- Oscer
- Onyx
- obrien
- ora
- orlin
- oven
- Orian
- Orvil
- Omid
The words in the list person name with O come from players of the word game Categories game.