Girl Names That Start With O
137 names with at least 100 people alive
Olivia, Olive and Olga are the girl names starting with O with the most people alive in the US: about 543,307 people are named Olivia. Among girls born in 2025, the most popular name starting with O was Olivia, given to 13,544 babies. Names that neither sex holds more than 80% of, such as Oakley, are on the gender-neutral names page.
Most Popular Girl Names Starting With O in 2025
Babies of that sex given each name in 2025, from Social Security records. Names given to girls and boys count here by the girls alone.
All Girl Names Starting With O
Ranked by people alive in the US today. A name counts as a girl name when more than 80% of the people alive with it are female; the peak year is when the most babies got it.
| # | Name | People alive | Peak year |
|---|---|---|---|
| 1 | Olivia | 543,307 | 2014 |
| 2 | Olive | 25,060 | 2022 |
| 3 | Olga | 22,863 | 1918 |
| 4 | Octavia | 20,175 | 2021 |
| 5 | Ophelia | 14,928 | 2024 |
| 6 | Opal | 14,462 | 1918 |
| 7 | Oaklynn | 11,808 | 2025 |
| 8 | Ora | 8,609 | 1919 |
| 9 | Odessa | 6,610 | 1920 |
| 10 | Oaklee | 6,556 | 2022 |
| 11 | Ofelia | 5,973 | 1929 |
| 12 | Oaklyn | 5,371 | 2018 |
| 13 | Ola | 5,319 | 1920 |
| 14 | Oakleigh | 4,116 | 2022 |
| 15 | Oralia | 3,928 | 1952 |
| 16 | Oriana | 3,828 | 2003 |
| 17 | Odalys | 3,375 | 1996 |
| 18 | Odette | 3,303 | 2025 |
| 19 | Odalis | 2,659 | 1998 |
| 20 | Olyvia | 2,645 | 2009 |
| 21 | Olympia | 2,435 | 1981 |
| 22 | Ona | 2,249 | 1917 |
| 23 | Oona | 1,742 | 2015 |
| 24 | Odelia | 1,413 | 2024 |
| 25 | Oma | 1,408 | 1916 |
| 26 | Orianna | 1,360 | 2013 |
| 27 | October | 1,328 | 2022 |
| 28 | Oliva | 1,304 | 1990 |
| 29 | Ouida | 1,299 | 1924 |
| 30 | Oneida | 1,141 | 1919 |
| 31 | Oceana | 1,130 | 2004 |
| 32 | Oksana | 1,015 | 1995 |
| 33 | Oleta | 1,008 | 1920 |
| 34 | Orla | 938 | 2024 |
| 35 | Otilia | 897 | 1935 |
| 36 | Orly | 811 | 2013 |
| 37 | Odilia | 783 | 1922 |
| 38 | Omayra | 778 | 1970 |
| 39 | Odyssey | 767 | 2022 |
| 40 | Ondrea | 758 | 1992 |
| 41 | Oumou | 753 | 2013 |
| 42 | Oaklie | 748 | 2021 |
| 43 | Oliviah | 711 | 2011 |
| 44 | Onika | 673 | 1975 |
| 45 | Orpha | 657 | 1917 |
| 46 | Onna | 624 | 2015 |
| 47 | Olivea | 615 | 2008 |
| 48 | Ozella | 533 | 1921 |
| 49 | Olevia | 525 | 1921 |
| 50 | Olena | 516 | 2024 |
| 51 | Orli | 507 | 2024 |
| 52 | Ohana | 499 | 2023 |
| 53 | Onita | 474 | 1925 |
| 54 | Oceanna | 469 | 2006 |
| 55 | Onalee | 448 | 1928 |
| 56 | Oretha | 435 | 1926 |
| 57 | Olinda | 425 | 1954 |
| 58 | Olivya | 425 | 2012 |
| 59 | Oliviana | 418 | 2021 |
| 60 | Ottilie | 418 | 2024 |
| 61 | Oriah | 417 | 2023 |
| 62 | Omaira | 394 | 1970 |
| 63 | Oletha | 366 | 1923 |
| 64 | Osmara | 342 | 2004 |
| 65 | Olina | 318 | 2022 |
| 66 | Orelia | 316 | 1920 |
| 67 | Olimpia | 314 | 1990 |
| 68 | Ogechi | 291 | 1997 |
| 69 | Oliwia | 288 | 2006 |
| 70 | Olivianna | 286 | 2019 |
| 71 | Oni | 282 | 2020 |
| 72 | Odaliz | 266 | 1996 |
| 73 | Omara | 256 | 2024 |
| 74 | Onica | 252 | 1998 |
| 75 | Otelia | 252 | 1923 |
| 76 | Orchid | 251 | 2021 |
| 77 | Odetta | 250 | 1922 |
| 78 | Oneisha | 247 | 1994 |
| 79 | Oneta | 243 | 1922 |
| 80 | Oluwakemi | 239 | 2000 |
| 81 | Ornella | 237 | 2013 |
| 82 | Oliviagrace | 234 | 2019 |
| 83 | Oriyah | 232 | 2025 |
| 84 | Oanh | 231 | 1981 |
| 85 | Oliana | 225 | 2018 |
| 86 | Omaria | 225 | 2004 |
| 87 | Olivette | 222 | 1920 |
| 88 | Oliviarose | 213 | 2019 |
| 89 | Orlinda | 209 | 1946 |
| 90 | Oceane | 207 | 2023 |
| 91 | Onie | 205 | 1918 |
| 92 | Olene | 201 | 1922 |
| 93 | Oluchi | 195 | 2001 |
| 94 | Onesty | 188 | 2006 |
| 95 | Oaklynne | 185 | 2023 |
| 96 | Odella | 185 | 1919 |
| 97 | Ofilia | 183 | 1929 |
| 98 | Ortencia | 181 | 1949 |
| 99 | Onya | 180 | 1989 |
| 100 | Olanna | 169 | 2025 |
See also boy names that start with O, every name that starts with O and the 100 most common girl names.