Boy names starting with O
55 boy 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 |
|---|---|---|---|---|
| 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 |
| Otis | Boy | Germanic | #652 (b) | 61,969 |
| Orlando | Boy | Italian | #873 (b) | 49,696 |
| Otto | Boy | Germanic | #277 (b) | 40,015 |
| Orville | Boy | — | — | 35,220 |
| Orion | Boy | Greek | #334 (b) | 23,750 |
| Osvaldo | Boy | — | — | 14,538 |
| Omari | Boy | Arabic | #687 (b) | 13,557 |
| Odin | Boy | — | #502 (b) | 13,282 |
| Octavio | Boy | — | — | 11,454 |
| Olin | Boy | — | — | 9,934 |
| Oren | Boy | Hebrew | — | 9,547 |
| Omer | Boy | — | — | 8,923 |
| Odis | Boy | — | — | 8,400 |
| Orval | Boy | — | — | 7,928 |
| Olen | Boy | — | — | 7,678 |
| Orin | Boy | Irish | — | 6,299 |
| Orrin | Boy | Irish | — | 5,985 |
| Oswaldo | Boy | — | — | 5,902 |
| Ottis | Boy | — | — | 4,647 |
| Ozzy | Boy | — | #549 (b) | 4,534 |
| Oran | Boy | Irish | — | 4,447 |
All 55 names
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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).