Baby Names That Start With O
Girls' and boys' names beginning with O, ranked by how many babies actually got them, plus how the letter itself has risen or fallen over the last century.
- Girls with O, 2025
- 1.7%
- vs 0.83% in 2000
- Girls' O names in use
- 180
- 803 recorded since 1880
- Girls' peak
- 2022
- at 1.9% of names
- Boys with O, 2025
- 2.2%
- vs 0.71% in 2000
- Boys' O names in use
- 243
- 832 recorded since 1880
- Boys' peak
- 2022
- at 2.3% of names
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 |
|---|---|---|---|---|---|
| 13,544#1 | Steady | 2014 | |||
| 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 | |||
| 740#423 | Up 226 rank positions in five years | 1918 | |||
| 1,597#197 | Down 1 rank positions in five years | 2022 | |||
| 50#3,201 | Down 201 rank positions in five years | 1918 | |||
| 422#652 | Down 4 rank positions in five years | 1920 | |||
| 275#873 | Down 101 rank positions in five years | 1987 | |||
| 80#2,294 | Down 319 rank positions in five years | 1919 | |||
| 1,241#277 | Up 112 rank positions in five years | 2024 | |||
| 40#3,759 | Up 379 rank positions in five years | 1919 | |||
| 1,183#264 | Up 127 rank positions in five years | 2024 | |||
| 982#308 | Up 26 rank positions in five years | 2021 | |||
| 1,012#334 | Down 9 rank positions in five years | 2018 | |||
| 193#1,197 | Up 406 rank positions in five years | 1920 | |||
| 207#1,058 | Up 99 rank positions in five years | 1919 | |||
| 1,933#156 | Up 128 rank positions in five years | 2025 | |||
| 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 | |||
| 1,964#153 | Up 155 rank positions in five years | 2025 | |||
| 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 | |||
| 87#2,148 | Down 2 rank positions in five years | 1929 | |||
| 70#2,103 | Down 89 rank positions in five years | 1918 | |||
| 21#5,867 | Down 257 rank positions in five years | 1916 | |||
| 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 | |||
| 565#535 | Up 88 rank positions in five years | 2023 | |||
| 456#637 | Down 75 rank positions in five years | 2018 | |||
| 375#720 | Up 75 rank positions in five years | 2024 | |||
| 67#2,161 | Up 853 rank positions in five years | 1916 | |||
| 303#883 | Up 598 rank positions in five years | 2025 | |||
| 548#549 | Up 500 rank positions in five years | 2025 | |||
| 72#2,072 | Up 16 rank positions in five years | 2005 | |||
| 423#668 | Up 190 rank positions in five years | 2023 | |||
| 181#1,157 | Up 5 rank positions in five years | 2022 | |||
| 113#1,791 | Up 421 rank positions in five years | 2003 | |||
| 345#787 | Up 343 rank positions in five years | 2022 | |||
| 72#2,073 | Down 287 rank positions in five years | 1991 | |||
| 84#2,210 | Up 281 rank positions in five years | 1981 | |||
| 200#1,077 | Down 160 rank positions in five years | 2020 | |||
| 39#3,820 | Up 1,978 rank positions in five years | 1996 | |||
| 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 | |||
| 56#2,985 | Up 908 rank positions in five years | 2024 | |||
| 229#997 | Up 889 rank positions in five years | 2025 | |||
| 126#1,433 | Up 140 rank positions in five years | 2023 | |||
| 48#3,283 | Down 662 rank positions in five years | 2009 | |||
| 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 | |||
| 155#1,410 | Up 338 rank positions in five years | 2023 | |||
| 62#2,768 | Down 435 rank positions in five years | 2015 | |||
| 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 | |||
| 53#3,094 | Up 890 rank positions in five years | 2013 | |||
| 40#3,757 | Down 833 rank positions in five years | 2008 | |||
| 54#2,507 | Up 141 rank positions in five years | 2016 | |||
| 70#2,532 | Up 1,804 rank positions in five years | 2024 | |||
| 43#3,561 | Up 1,290 rank positions in five years | 2004 | |||
| 57#2,951 | Up 3,313 rank positions in five years | 2024 | |||
| 75#2,017 | Down 84 rank positions in five years | 2022 | |||
| 41#3,693 | Up 4,606 rank positions in five years | 2022 | |||
| 21#5,865 | Up 698 rank positions in five years | 2024 | |||
| 29#4,722 | Up 5 rank positions in five years | 2013 | |||
| 26#5,062 | Up 4,321 rank positions in five years | 1920 | |||
| 24#5,358 | Up 87 rank positions in five years | 2022 | |||
| 35#4,145 | Up 373 rank positions in five years | 2013 | |||
| 54#3,063 | Up 315 rank positions in five years | 2021 | |||
| 27#4,957 | Up 842 rank positions in five years | 2022 | |||
| 62#2,277 | Up 327 rank positions in five years | 2023 | |||
| 33#4,328 | Up 803 rank positions in five years | 2021 | |||
| 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 | |||
| 22#5,664 | Down 534 rank positions in five years | 2024 | |||
| 40#3,758 | Down 170 rank positions in five years | 2023 | |||
| 66#2,176 | Up 1,218 rank positions in five years | 2025 | |||
| 92#1,763 | Up 3,865 rank positions in five years | 2025 | |||
| 21#5,866 | Down 420 rank positions in five years | 2021 | |||
| 70#2,533 | Up 3,732 rank positions in five years | 2023 | |||
| 31#4,524 | Up 1,493 rank positions in five years | 2024 | |||
| 54#2,508 | Up 1,196 rank positions in five years | 2025 | |||
| 23#5,514 | Up 1,962 rank positions in five years | 2025 | |||
| 48#3,282 | Up 1,444 rank positions in five years | 2025 | |||
| 56#2,438 | Up 5,469 rank positions in five years | 2025 | |||
| 25#5,195 | Up 1,946 rank positions in five years | 2025 | |||
| 23#5,513 | Up 1,962 rank positions in five years | 2023 | |||
| 33#4,327 | Up 3,150 rank positions in five years | 2025 | |||
| 23#5,515 | Up 1,963 rank positions in five years | 2025 |
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O names climbing fastest
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.
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.