Baby Names Starting with O
139 baby names that begin with O, sorted by current US popularity. Tap any name for meaning, origin, popularity history, sibling-name pairings, and middle-name ideas.
- OscarDeer
- OliviaOlive, olive branch
- Opal
- Olga
- OliverTrue
- Otis
- OliveOlive
- OllieOlive
- OraBreeze
- Owen
- Omar
- OrvilleGold
- Orlando
- Ola
- OttoWealth, riches
- OdessaSeven titles
- Ophelia
- Odell
- OctaviaThe eighth
- Oma
- Odis
- Orval
- Olin
- Ona
- Ofelia
- Olen
- Omer
- Oren
- Orpha
- Oleta
- Onyx
- OceanSea
- Ozzy
- Ozias
- Osiris
- Oaklynn
- Oaklee
- Oaklyn
- OakleighWoodland clearing, glade
- Ouida
- Octavio
- Orin
- Orrin
- Ottis
- Osvaldo
- OranLion
- Obie
- Oswald
- Otho
- Ossie
- Oral
- Oneal
- Orion
- OlympiaOlympus
- Ozella
- Olan
- Olaf
- Odelia
- Orland
- Oneida
- Orvil
- Odette
- Omega
- Olevia
- Ole
- OakleyOak
- Oswaldo
- Oris
- Octavius
- Orie
- Ozzie
- OsborneGod
- Okey
- Otilia
- Olene
- Ova
- Omari
- Oda
- Orlin
- Oneil
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All 139 names starting with O
- Oscar
- Olivia
- Opal
- Olga
- Oliver
- Otis
- Olive
- Ollie
- Ora
- Owen
- Omar
- Orville
- Orlando
- Ola
- Otto
- Odessa
- Ophelia
- Odell
- Octavia
- Oma
- Odis
- Orval
- Olin
- Ona
- Ofelia
- Olen
- Omer
- Oren
- Orpha
- Oleta
- Onyx
- Ocean
- Ozzy
- Ozias
- Osiris
- Oaklynn
- Oaklee
- Oaklyn
- Oakleigh
- Ouida
- Octavio
- Orin
- Orrin
- Ottis
- Osvaldo
- Oran
- Obie
- Oswald
- Otho
- Ossie
- Oral
- Oneal
- Orion
- Olympia
- Ozella
- Olan
- Olaf
- Odelia
- Orland
- Oneida
- Orvil
- Odette
- Omega
- Olevia
- Ole
- Oakley
- Oswaldo
- Oris
- Octavius
- Orie
- Ozzie
- Osborne
- Okey
- Otilia
- Olene
- Ova
- Omari
- Oda
- Orlin
- Oneil
- Obed
- Orson
- Oletha
- Orvel
- Oliva
- Omie
- Orvin
- Onnie
- Olinda
- Osbaldo
- Orvis
- Orris
- Orlan
- Orlo
- Orman
- Olean
- Odella
- Odile
- Onalee
- Ovid
- Othel
- Orren
- Ovidio
- Orrie
- Owens
- Obert
- Orbie
- Octavious
- Orange
- Odus
- Ogden
- Olie
- Obadiah
- Octaviano
- Overton
- Orlanda
- Olden
- Ormond
- Oval
- Osborn
- Orley
- Ontario
- Osman
- Othello
- Orbin
- Oather
- Octave
- Olando
- Onesimo
- Ollis
- Orel
- Oley
- Odes
- Ovie
- Odin
- Olivier
- Oreste
- Osama
- Odean