429 Baby Names That Start With O (With Meanings and Popularity)

Oliver

Ophelia

Oscar

Otto

Otis

Ottilie

Olivia

Olive

Owen

Orion

Orson

Odette

Ozias

Odin

Orla

Oisin

Opal

Octavia

Oren

Orlando

Oakley

Orpheus

Osiris

Oona

Orin

Oran

Oriana

Ocean

Oslo

Odessa

Octavius

Oswald

Olympia

Onyx

Oberon

Olivier

Odelia

Ossian

Omri

Omar

Oswin

Othello

Oleander

Ozzy

Oskar

Olga

Odie

Ottoline

Ollie

Oluwatobiloba

Oceane

Obadiah

Orchid

Osias

Obsidian

Octavio

Ondine

Odile

Olin

Odysseus

Ozymandias

Ornella

Ollivander

Orlaith

Odhran

Orlo

Octavian

Oisín

Osric

Othniel

Ophira

Oriane

Osman

Omaira

Oana

Oaks

Onni

Oceana

Oksana

Olwen

Olaf

Osian

Orestes

Ostara

Odalys

October

Odalis

Names that start with O

Baby names for boys and girls that start with the letter O, including origin, meaning, and popularity. Top O names include Olivia and Oliver and trending baby names beginning with A include Odin and Ophelia.