Theon is a rare boys' name that peaked in 2022 and remains in steady use.
Theon is predominantly a boy name. In 2025 it ranked #5,367 for boy births in the United States (and #11,325 across all names), given to 18 babies. Theon first appears in 1924 and peaked in 2022 (34 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 18 | 18 | — | #5,367 |
| 2024 | 30 | 30 | — | #3,777 |
| 2023 | 26 | 26 | — | #4,204 |
| 2022 | 34 | 34 | — | #3,457 |
| 2021 | 25 | 25 | — | #4,222 |
| 2020 | 10 | 10 | — | #7,993 |
| 2019 | 27 | 27 | — | #3,990 |
| 2018 | 14 | 14 | — | #6,305 |
| 2017 | 23 | 23 | — | #4,449 |
| 2016 | 16 | 16 | — | #5,767 |
| 2015 | 12 | 12 | — | #7,026 |
| 2014 | 11 | 11 | — | #7,505 |
| 2013 | 15 | 15 | — | #5,890 |
| 2012 | 12 | 12 | — | #7,000 |
| 2009 | 7 | 7 | — | #10,856 |
| 2006 | 5 | 5 | — | #13,816 |
| 2001 | 5 | 5 | — | #12,147 |
| 2000 | 5 | 5 | — | #11,970 |
| 1998 | 6 | 6 | — | #9,532 |
| 1997 | 6 | — | — | #9,152 |
| 1991 | 7 | — | — | #7,198 |
| 1989 | 6 | — | — | #7,819 |
| 1985 | 6 | — | — | #6,460 |
| 1984 | 6 | — | — | #6,246 |
| 1983 | 5 | — | — | #7,235 |
| 1981 | 5 | — | — | #7,189 |
| 1980 | 5 | — | — | #7,208 |
| 1979 | 8 | — | — | #4,803 |
| 1977 | 7 | — | — | #5,075 |
| 1973 | 8 | — | — | #4,025 |
| 1971 | 9 | — | — | #3,630 |
| 1970 | 18 | — | #5,783 | #3,494 |
| 1969 | 7 | — | — | #3,911 |
| 1968 | 9 | — | — | #3,090 |
| 1937 | 5 | — | — | #3,971 |
| 1934 | 6 | — | — | #3,642 |
| 1924 | 5 | — | — | #4,893 |