Brennon is an uncommon variant of Brennan that peaked in 2009 and has since faded.
Brennon is a boy name. In 2025 it ranked #5,648 for boy births in the United States (and #11,920 across all names), given to 16 babies. Brennon first appears in 1958 and peaked in 2009 (189 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2025 | 16 | 16 | #5,648 |
| 2024 | 30 | 30 | #3,705 |
| 2023 | 35 | 35 | #3,359 |
| 2022 | 32 | 32 | #3,548 |
| 2021 | 57 | 57 | #2,379 |
| 2020 | 50 | 50 | #2,555 |
| 2019 | 52 | 52 | #2,529 |
| 2018 | 40 | 40 | #2,955 |
| 2017 | 58 | 58 | #2,276 |
| 2016 | 49 | 49 | #2,561 |
| 2015 | 64 | 64 | #2,150 |
| 2014 | 71 | 71 | #2,002 |
| 2013 | 95 | 95 | #1,615 |
| 2012 | 117 | 117 | #1,419 |
| 2011 | 127 | 127 | #1,333 |
| 2010 | 168 | 168 | #1,119 |
| 2009 | 189 | 189 | #1,028 |
| 2008 | 164 | 164 | #1,115 |
| 2007 | 151 | 151 | #1,171 |
| 2006 | 140 | 140 | #1,194 |
| 2005 | 114 | 114 | #1,325 |
| 2004 | 126 | 126 | #1,206 |
| 2003 | 148 | 148 | #1,049 |
| 2002 | 143 | 143 | #1,060 |
| 2001 | 158 | 158 | #973 |
| 2000 | 152 | 152 | #980 |
| 1999 | 174 | 174 | #867 |
| 1998 | 161 | 161 | #898 |
| 1997 | 150 | — | #909 |
| 1996 | 141 | — | #926 |
| 1995 | 130 | — | #970 |
| 1994 | 117 | — | #1,026 |
| 1993 | 117 | — | #1,016 |
| 1992 | 96 | — | #1,119 |
| 1991 | 89 | — | #1,172 |
| 1990 | 73 | — | #1,297 |
| 1989 | 56 | — | #1,478 |
| 1988 | 47 | — | #1,555 |
| 1987 | 64 | — | #1,205 |
| 1986 | 34 | — | #1,796 |
| 1985 | 26 | — | #2,123 |
| 1984 | 49 | — | #1,352 |
| 1983 | 33 | — | #1,712 |
| 1982 | 20 | — | #2,436 |
| 1981 | 26 | — | #2,045 |
| 1980 | 36 | — | #1,625 |
| 1979 | 19 | — | #2,476 |
| 1978 | 14 | — | #2,949 |
| 1977 | 19 | — | #2,375 |
| 1976 | 12 | — | #3,115 |
| 1975 | 19 | — | #2,295 |
| 1974 | 11 | — | #3,153 |
| 1973 | 18 | — | #2,231 |
| 1972 | 18 | — | #2,164 |
| 1971 | 13 | — | #2,693 |
| 1970 | 12 | — | #2,752 |
| 1969 | 15 | — | #2,225 |
| 1968 | 12 | — | #2,459 |
| 1967 | 9 | — | #2,793 |
| 1958 | 6 | — | #3,585 |