CRITICALLY LOW — LETTER O
177 names under O. Reported in 2025 at five to nine births. The line is five.
| Name | Sex | First seen | 2025 births | Peak | Total births |
|---|---|---|---|---|---|
| Oaklen | F | 2020 | 6 | 2024 · 16 | 58 |
| Oaklin | F | 2018 | 8 | 2021 · 22 | 93 |
| Oakly | F | 2022 | 6 | 2024 · 9 | 22 |
| Oaklynd | F | 2016 | 5 | 2019 · 6 | 27 |
| Oaklynd | M | 2018 | 6 | 2022 · 16 | 61 |
| Oaklyne | F | 2025 | 6 | 2025 · 6 | 6 |
| Oaklynn | M | 2018 | 9 | 2022 · 18 | 97 |
| Obai | M | 2018 | 5 | 2023 · 7 | 35 |
| Obaloluwa | M | 2005 | 7 | 2019 · 15 | 146 |
| Obediah | M | 1912 | 5 | 1954 · 8 | 226 |
| Oberyn | M | 2015 | 7 | 2019 · 18 | 119 |
| Obrempong | M | 2021 | 6 | 2024 · 7 | 30 |
| Oceanna | F | 1989 | 5 | 2006 · 31 | 474 |
| Octavion | M | 1990 | 6 | 2006 · 15 | 195 |
| Octayvia | F | 1992 | 5 | 2023 · 9 | 89 |
| October | M | 2016 | 9 | 2023 · 21 | 96 |
| Odeliah | F | 2025 | 5 | 2025 · 5 | 5 |
| Odelis | F | 2025 | 5 | 2025 · 5 | 5 |
| Odella | F | 1897 | 7 | 1919 · 35 | 828 |
| Odera | M | 1999 | 5 | 2005 · 8 | 23 |
| Odhran | M | 2020 | 5 | 2022 · 7 | 36 |
| Odonis | M | 2019 | 5 | 2024 · 9 | 22 |
| Odrit | M | 2025 | 6 | 2025 · 6 | 6 |
| Odyssey | M | 1997 | 8 | 2023 · 8 | 41 |
| Offranel | M | 2025 | 5 | 2025 · 5 | 5 |
| Ogden | M | 1892 | 9 | 1917 · 25 | 810 |
| Ogechi | F | 1980 | 7 | 1997 · 15 | 296 |
| Ohaji | M | 1996 | 6 | 2021 · 10 | 51 |
| Ohanna | F | 2004 | 8 | 2021 · 17 | 164 |
| Ohtani | M | 2024 | 9 | 2024 · 10 | 19 |
| Ojasvi | F | 2011 | 6 | 2019 · 8 | 42 |
| Okalani | F | 2009 | 5 | 2017 · 11 | 50 |
| Olachi | F | 2008 | 5 | 2008 · 8 | 33 |
| Olaedo | F | 2024 | 7 | 2025 · 7 | 12 |
| Olaf | M | 1880 | 5 | 1916 · 79 | 2,531 |
| Olajuwon | M | 1983 | 8 | 1994 · 58 | 641 |
| Olamide | M | 1992 | 6 | 2015 · 21 | 298 |
| Olea | F | 1916 | 9 | 2025 · 9 | 57 |
| Oleg | M | 1959 | 9 | 2019 · 26 | 466 |
| Olegario | M | 1921 | 6 | 1981 · 13 | 414 |
| Oletta | F | 1912 | 6 | 1923 · 19 | 343 |
| Olive | M | 1885 | 7 | 1921 · 20 | 394 |
| Olivea | F | 1917 | 7 | 2008 · 48 | 644 |
| Olivera | F | 1968 | 6 | 1976 · 8 | 19 |
| Oliverio | M | 1943 | 5 | 2008 · 14 | 221 |
| Oliverjames | M | 2015 | 6 | 2021 · 8 | 24 |
| Oliviah | F | 1992 | 9 | 2011 · 53 | 717 |
| Oliviarae | F | 2018 | 5 | 2022 · 7 | 23 |
| Oliwia | F | 1997 | 9 | 2006 · 24 | 290 |
| Olman | M | 2001 | 9 | 2009 · 14 | 153 |
| Ololade | F | 2005 | 5 | 2005 · 6 | 37 |
| Olufemi | M | 1973 | 7 | 1983 · 14 | 390 |
| Oluwadamilare | M | 2002 | 5 | 2019 · 15 | 146 |
| Oluwadamilola | F | 1992 | 5 | 2014 · 20 | 284 |
| Oluwadamilola | M | 1999 | 5 | 2004 · 13 | 180 |
| Oluwadarasimi | M | 2010 | 7 | 2015 · 20 | 180 |
| Oluwademilade | M | 2002 | 8 | 2014 · 22 | 237 |
| Oluwafemi | M | 1984 | 7 | 2022 · 15 | 258 |
| Oluwaferanmi | M | 2004 | 7 | 2015 · 14 | 125 |
| Oluwanifemi | F | 2003 | 5 | 2016 · 21 | 241 |
| Oluwatimilehin | M | 2000 | 7 | 2014 · 19 | 206 |
| Oluwatise | M | 2009 | 6 | 2017 · 12 | 57 |
| Oluwatobi | M | 1990 | 7 | 2002 · 29 | 562 |
| Oluwatomisin | F | 2001 | 5 | 2015 · 13 | 136 |
| Olyn | M | 1914 | 6 | 1918 · 8 | 98 |
| Omair | M | 1984 | 8 | 2001 · 14 | 336 |
| Omaira | F | 1969 | 5 | 1970 · 31 | 411 |
| Omani | M | 2004 | 9 | 2020 · 9 | 73 |
| Omara | F | 1977 | 9 | 2024 · 15 | 260 |
| Omari | F | 1979 | 7 | 2005 · 22 | 399 |
| Omaria | F | 1999 | 9 | 2004 · 20 | 227 |
| Omaya | F | 2001 | 5 | 2011 · 9 | 95 |
| Omega | F | 1893 | 5 | 1925 · 50 | 2,186 |
| Omen | M | 1921 | 5 | 2022 · 9 | 41 |
| Omere | M | 2011 | 5 | 2015 · 32 | 236 |
| Omias | M | 2025 | 5 | 2025 · 5 | 5 |
| Omira | F | 2025 | 8 | 2025 · 8 | 8 |
| Omiri | M | 2024 | 6 | 2024 · 7 | 13 |
| Omkar | M | 1996 | 9 | 2008 · 22 | 353 |
| Omni | M | 2006 | 9 | 2018 · 11 | 102 |
| Omnia | F | 1997 | 9 | 2020 · 10 | 89 |
| Omri | F | 1996 | 7 | 2024 · 10 | 44 |
| Onai | F | 2025 | 5 | 2025 · 5 | 5 |
| Onalee | F | 1904 | 8 | 1928 · 35 | 1,007 |
| Onaraya | F | 2025 | 5 | 2025 · 5 | 5 |
| Oneal | M | 1889 | 6 | 1932 · 63 | 3,049 |
| Oneil | M | 1892 | 7 | 1924 · 38 | 1,757 |
| Onesti | F | 2004 | 8 | 2004 · 9 | 119 |
| Onesty | F | 1998 | 8 | 2006 · 12 | 189 |
| Oniel | M | 1913 | 8 | 1993 · 13 | 254 |
| Onix | F | 2022 | 6 | 2022 · 6 | 12 |
| Onnika | F | 2002 | 6 | 2013 · 10 | 78 |
| Onora | F | 2008 | 8 | 2020 · 12 | 99 |
| Onyedikachi | M | 2006 | 5 | 2015 · 8 | 19 |
| Onyxx | F | 2020 | 6 | 2023 · 6 | 22 |
| Ophilia | F | 1915 | 7 | 1915 · 8 | 22 |
| Ophira | F | 2020 | 6 | 2021 · 7 | 18 |
| Orabella | F | 2018 | 7 | 2020 · 10 | 31 |
| Oracle | F | 2015 | 5 | 2021 · 9 | 42 |
| Oracle | M | 2022 | 8 | 2022 · 8 | 24 |
| Orchid | F | 1926 | 9 | 2021 · 14 | 304 |
| Orel | M | 1883 | 6 | 1916 · 27 | 562 |
| Oreoluwa | M | 2000 | 5 | 2003 · 12 | 170 |
| Orhaan | M | 2022 | 8 | 2025 · 8 | 19 |
| Oria | F | 1906 | 5 | 1915 · 10 | 264 |
| Orian | F | 1920 | 5 | 2022 · 11 | 91 |
| Oriane | F | 2002 | 8 | 2018 · 9 | 54 |
| Oriella | F | 2025 | 5 | 2025 · 5 | 5 |
| Orielle | F | 1982 | 5 | 2023 · 12 | 54 |
| Orien | M | 1903 | 9 | 1921 · 17 | 545 |
| Orlaith | F | 2006 | 6 | 2024 · 10 | 49 |
| Orlan | M | 1898 | 7 | 1926 · 32 | 960 |
| Orlani | F | 2025 | 5 | 2025 · 5 | 5 |
| Ornella | F | 1968 | 6 | 2013 · 12 | 240 |
| Orren | M | 1880 | 7 | 1923 · 28 | 925 |
| Orry | M | 1985 | 6 | 1986 · 80 | 383 |
| Orsen | M | 2011 | 5 | 2022 · 6 | 21 |
| Orya | F | 2010 | 6 | 2024 · 10 | 33 |
| Oryn | M | 2008 | 9 | 2018 · 37 | 215 |
| Osa | F | 1880 | 9 | 1892 · 21 | 683 |
| Osaid | M | 2020 | 5 | 2024 · 8 | 19 |
| Osayd | M | 2022 | 5 | 2024 · 14 | 25 |
| Osborn | M | 1884 | 6 | 1923 · 22 | 603 |
| Osei | M | 1974 | 5 | 1981 · 11 | 238 |
| Oshae | M | 1991 | 7 | 1994 · 20 | 249 |
| Oshan | M | 2025 | 5 | 2025 · 5 | 5 |
| Oshane | M | 1996 | 6 | 2009 · 8 | 67 |
| Oshean | M | 2024 | 6 | 2025 · 6 | 11 |
| Oshen | M | 2004 | 6 | 2023 · 21 | 150 |
| Osher | M | 1958 | 9 | 2024 · 14 | 227 |
| Oshin | M | 2023 | 6 | 2024 · 7 | 18 |
| Oshyn | F | 2003 | 8 | 2024 · 11 | 77 |
| Osian | M | 2017 | 9 | 2017 · 9 | 50 |
| Osmany | M | 1991 | 5 | 2012 · 12 | 165 |
| Osmari | F | 2025 | 5 | 2025 · 5 | 5 |
| Osmund | M | 1957 | 7 | 1957 · 8 | 31 |
| Ossian | M | 2005 | 8 | 2023 · 24 | 106 |
| Osvin | M | 2003 | 7 | 2012 · 9 | 82 |
| Osyris | M | 2010 | 6 | 2019 · 9 | 51 |
| Othello | M | 1913 | 8 | 1923 · 16 | 687 |
| Otillia | F | 1888 | 8 | 1895 · 10 | 160 |
| Ottavia | F | 1993 | 6 | 2022 · 8 | 44 |
| Ottavio | M | 1915 | 5 | 1921 · 11 | 95 |
| Ottlie | F | 2025 | 6 | 2025 · 6 | 6 |
| Ourania | F | 1963 | 5 | 1976 · 12 | 122 |
| Ousman | M | 1992 | 9 | 2016 · 26 | 360 |
| Oussama | M | 1997 | 5 | 1997 · 6 | 11 |
| Ovee | F | 2014 | 9 | 2018 · 11 | 89 |
| Ovi | M | 2021 | 8 | 2023 · 9 | 42 |
| Ovie | M | 1896 | 9 | 2023 · 22 | 489 |
| Oviya | F | 2001 | 6 | 2011 · 20 | 160 |
| Owain | M | 1998 | 7 | 2008 · 16 | 151 |
| Owin | M | 1999 | 9 | 2013 · 16 | 211 |
| Owynn | F | 2014 | 6 | 2015 · 11 | 84 |
| Owynn | M | 2005 | 6 | 2013 · 16 | 161 |
| Oxford | M | 2013 | 5 | 2020 · 14 | 108 |
| Oxley | M | 2015 | 8 | 2016 · 13 | 83 |
| Oya | F | 2017 | 6 | 2022 · 9 | 44 |
| Oyinkansola | F | 1996 | 5 | 2016 · 10 | 108 |
| Oysha | F | 2021 | 5 | 2024 · 13 | 23 |
| Ozai | M | 2019 | 7 | 2024 · 14 | 43 |
| Ozair | M | 1994 | 7 | 2022 · 17 | 99 |
| Ozara | F | 2014 | 7 | 2023 · 11 | 40 |
| Ozari | M | 2024 | 8 | 2025 · 8 | 13 |
| Ozell | M | 1909 | 5 | 1937 · 42 | 1,725 |
| Ozella | F | 1881 | 7 | 1921 · 73 | 2,338 |
| Ozia | M | 1930 | 6 | 1930 · 6 | 12 |
| Ozian | M | 2024 | 7 | 2024 · 8 | 15 |
| Oziris | M | 2025 | 5 | 2025 · 5 | 5 |
| Oziyah | F | 2025 | 5 | 2025 · 5 | 5 |
| Oziyah | M | 2025 | 7 | 2025 · 7 | 7 |
| Ozlem | F | 1968 | 8 | 2022 · 29 | 86 |
| Ozlyn | F | 2020 | 7 | 2020 · 8 | 32 |
| Ozora | F | 2024 | 5 | 2024 · 10 | 15 |
| Ozymandias | M | 2018 | 5 | 2023 · 10 | 55 |
| Ozzi | F | 2021 | 7 | 2021 · 7 | 29 |
| Ozzlyn | F | 2022 | 9 | 2022 · 10 | 35 |
Source: U.S. Social Security Administration national names file (1880–2025). Names below 5 occurrences in a year are not reported.
Somewhere, a grandmother is unsurprised.
A collection of THE MUSEUM OF HOPEFUL MACHINES