Boy Names That Start With O
Boys' names beginning with O, ranked by how many babies actually got them — not by editorial preference — plus which ones are climbing and how the letter itself has moved.
- Share of boys, 2025
- 2.2%
- vs 0.71% in 2000
- Names in use
- 243
- 832 recorded since 1880
- Letter peaked
- 2022
- at 2.3% of names
- Rank among 26 letters
- #17
- by 2025 share
How O has fared since 1880
Share of all listed U.S. births given a name starting with O, year by year. Plotted as a share rather than a count — raw counts track how many babies were born, so every letter would appear to peak in 1957.
| Save name | Name & meaning | History 1926–2025, yearly counts; individually scaled | Babies 2025 · rank | 5-year rank movement | Peak year |
|---|---|---|---|---|---|
| 14,939#3 | Steady | 2024 | |||
| 7,190#31 | Down 9 rank positions in five years | 2016 | |||
| 1,620#223 | Down 9 rank positions in five years | 2006 | |||
| 1,333#260 | Down 6 rank positions in five years | 2007 | |||
| 422#652 | Down 4 rank positions in five years | 1920 | |||
| 275#873 | Down 101 rank positions in five years | 1987 | |||
| 1,241#277 | Up 112 rank positions in five years | 2024 | |||
| 1,012#334 | Down 9 rank positions in five years | 2018 | |||
| 207#1,058 | Up 99 rank positions in five years | 1919 | |||
| 130#1,408 | Steady | 2004 | |||
| 604#502 | Down 171 rank positions in five years | 2022 | |||
| 397#687 | Down 187 rank positions in five years | 2018 | |||
| 154#1,278 | Up 73 rank positions in five years | 2003 | |||
| 688#454 | Down 34 rank positions in five years | 2022 | |||
| 86#1,849 | Down 108 rank positions in five years | 1921 | |||
| 174#1,184 | Up 198 rank positions in five years | 2025 | |||
| 70#2,103 | Down 89 rank positions in five years | 1918 | |||
| 881#365 | Up 248 rank positions in five years | 2023 | |||
| 85#1,859 | Down 48 rank positions in five years | 1920 | |||
| 62#2,278 | Up 4 rank positions in five years | 1915 | |||
| 375#720 | Up 75 rank positions in five years | 2024 | |||
| 67#2,161 | Up 853 rank positions in five years | 1916 | |||
| 548#549 | Up 500 rank positions in five years | 2025 | |||
| 72#2,072 | Up 16 rank positions in five years | 2005 | |||
| 181#1,157 | Up 5 rank positions in five years | 2022 | |||
| 72#2,073 | Down 287 rank positions in five years | 1991 | |||
| 200#1,077 | Down 160 rank positions in five years | 2020 | |||
| 93#1,750 | Down 471 rank positions in five years | 2016 | |||
| 123#1,455 | Up 319 rank positions in five years | 2023 | |||
| 123#1,454 | Up 587 rank positions in five years | 2023 | |||
| 229#997 | Up 889 rank positions in five years | 2025 | |||
| 126#1,433 | Up 140 rank positions in five years | 2023 | |||
| 104#1,630 | Down 64 rank positions in five years | 2024 | |||
| 66#2,177 | Down 259 rank positions in five years | 2008 | |||
| 59#2,345 | Up 111 rank positions in five years | 2008 | |||
| 381#708 | Up 899 rank positions in five years | 2025 | |||
| 52#2,559 | Up 124 rank positions in five years | 2011 | |||
| 76#2,002 | Up 279 rank positions in five years | 2024 | |||
| 74#2,033 | Down 189 rank positions in five years | 2022 | |||
| 160#1,248 | Up 247 rank positions in five years | 2025 | |||
| 54#2,507 | Up 141 rank positions in five years | 2016 | |||
| 75#2,017 | Down 84 rank positions in five years | 2022 | |||
| 62#2,277 | Up 327 rank positions in five years | 2023 | |||
| 59#2,344 | Up 567 rank positions in five years | 2023 | |||
| 87#1,833 | Up 599 rank positions in five years | 2025 | |||
| 78#1,969 | Up 1,090 rank positions in five years | 2022 | |||
| 66#2,176 | Up 1,218 rank positions in five years | 2025 | |||
| 92#1,763 | Up 3,865 rank positions in five years | 2025 | |||
| 54#2,508 | Up 1,196 rank positions in five years | 2025 | |||
| 56#2,438 | Up 5,469 rank positions in five years | 2025 |
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Biggest O names of all time
By total applications since 1880 — a different list from the one above, because it counts every generation, not just this one.
Every other letter
Sources & methodology
Rankings and counts come from official birth card-application data, 1880–2025. Counts are card applications rather than births, and any name given to fewer than 5 babies of one sex in a year is not published — so “—” means genuinely uncommon, never invalid. The “climbing fastest” row ranks by five-year rank movement as a ratio, and a name must be inside the top 1,000 with at least 200 applications in 2025 to qualify — a looser gate than the site-wide trending list uses, because inside a single letter the stricter one leaves some letters empty. Letter shares are measured over listed names only, and the 25-year comparison is a generation rather than five years because letter fashion moves far more slowly than any one name.