Baby names starting with O
98 baby names that start with O, ranked by how many U.S. babies have been given each name since 1880.
Most popular
| Name | Gender | Origin | 2025 rank | Babies since 1880 |
|---|---|---|---|---|
| Olivia | Girl | Latin | #1 (g) | 568,136 |
| Oliver | Boy | Germanic | #3 (b) | 270,680 |
| Owen | Boy | Welsh | #31 (b) | 246,320 |
| Oscar | Boy | Irish or Old English | #223 (b) | 214,168 |
| Omar | Boy | Arabic | #260 (b) | 106,894 |
| Opal | Girl | English from the precious stone | #423 (g) | 74,257 |
| Olive | Girl | English | #197 (g) | 67,320 |
| Olga | Girl | Russian | — | 62,070 |
| Otis | Boy | Germanic | #652 (b) | 61,969 |
| Ollie | Unisex | Germanic | — | 59,267 |
| Orlando | Boy | Italian | #873 (b) | 49,696 |
| Ora | Unisex | — | — | 44,894 |
| Otto | Boy | Germanic | #277 (b) | 40,015 |
| Orville | Boy | — | — | 35,220 |
| Ola | Girl | — | — | 30,275 |
| Oakley | Unisex | English | #156 (g), #454 (b) | 26,745 |
| Ophelia | Girl | Greek | #264 (g) | 25,785 |
| Octavia | Girl | Latin | #308 (g) | 24,117 |
| Orion | Boy | Greek | #334 (b) | 23,750 |
| Odell | Unisex | — | — | 19,034 |
| Odessa | Girl | — | — | 18,718 |
| Osvaldo | Boy | — | — | 14,538 |
| Omari | Boy | Arabic | #687 (b) | 13,557 |
| Odin | Boy | — | #502 (b) | 13,282 |
| Oaklynn | Girl | — | #153 (g) | 11,863 |
All 98 names
- Olivia
- Oliver
- Owen
- Oscar
- Omar
- Opal
- Olive
- Olga
- Otis
- Ollie
- Orlando
- Ora
- Otto
- Orville
- Ola
- Oakley
- Ophelia
- Octavia
- Orion
- Odell
- Odessa
- Osvaldo
- Omari
- Odin
- Oaklynn
- Octavio
- Olin
- Oma
- Oren
- Ofelia
- Omer
- Onyx
- Odis
- Ocean
- Ona
- Orval
- Otha
- Olen
- Ocie
- Oaklee
- Orin
- Orrin
- Orpha
- Oswaldo
- Oralia
- Oleta
- Oaklyn
- Ouida
- Ottis
- Ossie
- Ozzy
- Osiris
- Oran
- Obie
- Oswald
- Odette
- Odie
- Ozzie
- Oakleigh
- Obed
- Omarion
- Osman
- Oriana
- Octavius
- Olympia
- Odalys
- Otho
- Oral
- Oskar
- Oneal
- Osbaldo
- Omega
- Osiel
- Odelia
- Ozell
- Olan
- Oziel
- Orson
- Odalis
- Olyvia
- Olaf
- Obadiah
- Ole
- Ozias
- Olivier
- Oona
- Osborne
- Oakland
- Orla
- Octavian
- October
- Oksana
- Osama
- Omid
- Oaklen
- Othniel
- Onika
- Oz
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Open the swipe pickerPopularity data: U.S. Social Security Administration baby name data, 1880–2025 (names given to 5+ babies per year).