Isak is a rare variant of Isaac that peaked in 2004 and has grown less common since.
Isak is a boy name. In 2025 it ranked #3,154 for boy births in the United States (and #6,770 across all names), given to 38 babies. Isak first appears in 1979 and peaked in 2004 (57 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2025 | 38 | 38 | #3,154 |
| 2024 | 26 | 26 | #4,123 |
| 2023 | 29 | 29 | #3,834 |
| 2022 | 14 | 14 | #6,281 |
| 2021 | 23 | 23 | #4,422 |
| 2020 | 24 | 24 | #4,195 |
| 2019 | 18 | 18 | #5,237 |
| 2018 | 31 | 31 | #3,566 |
| 2017 | 34 | 34 | #3,338 |
| 2016 | 26 | 26 | #4,040 |
| 2015 | 34 | 34 | #3,317 |
| 2014 | 27 | 27 | #3,835 |
| 2013 | 17 | 17 | #5,259 |
| 2012 | 31 | 31 | #3,476 |
| 2011 | 30 | 30 | #3,545 |
| 2010 | 51 | 51 | #2,445 |
| 2009 | 37 | 37 | #3,129 |
| 2008 | 42 | 42 | #2,850 |
| 2007 | 52 | 52 | #2,458 |
| 2006 | 57 | 57 | #2,231 |
| 2005 | 55 | 55 | #2,195 |
| 2004 | 57 | 57 | #2,084 |
| 2003 | 39 | 39 | #2,594 |
| 2002 | 39 | 39 | #2,526 |
| 2001 | 26 | 26 | #3,353 |
| 2000 | 29 | 29 | #3,023 |
| 1999 | 28 | 28 | #2,969 |
| 1998 | 20 | 20 | #3,634 |
| 1997 | 26 | — | #2,931 |
| 1996 | 25 | — | #2,966 |
| 1995 | 21 | — | #3,236 |
| 1994 | 18 | — | #3,660 |
| 1993 | 12 | — | #4,822 |
| 1992 | 7 | — | #6,961 |
| 1991 | 11 | — | #4,900 |
| 1990 | 7 | — | #6,714 |
| 1989 | 5 | — | #8,395 |
| 1988 | 10 | — | #4,570 |
| 1987 | 7 | — | #5,728 |
| 1986 | 8 | — | #5,054 |
| 1983 | 5 | — | #6,676 |
| 1980 | 5 | — | #6,649 |
| 1979 | 6 | — | #5,644 |