Sly is a very rare boys' name that peaked in 2025 and has grown less common since.
Sly is a boy name. In 2025 it ranked #8,160 for boy births in the United States (and #17,009 across all names), given to 10 babies. Sly first appears in 1973 and peaked in 2025 (10 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2025 | 10 | 10 | #8,160 |
| 2022 | 6 | 6 | #12,113 |
| 2021 | 8 | 8 | #9,574 |
| 2019 | 5 | 5 | #13,855 |
| 2016 | 6 | 6 | #11,932 |
| 2012 | 6 | 6 | #12,067 |
| 2010 | 7 | 7 | #10,591 |
| 2008 | 6 | 6 | #12,339 |
| 2005 | 5 | 5 | #13,077 |
| 1997 | 6 | — | #9,102 |
| 1996 | 5 | — | #10,333 |
| 1995 | 5 | — | #10,112 |
| 1994 | 9 | — | #6,286 |
| 1984 | 5 | — | #7,180 |
| 1978 | 6 | — | #5,669 |
| 1973 | 6 | — | #5,006 |