Isais is a very rare variant of Isaias that peaked in 2009 and has grown less common since.
Isais is a boy name. In 2025 it ranked #10,079 for boy births in the United States (and #20,813 across all names), given to 7 babies. Isais was first reported in SSA data in 1980 and peaked in 2009 (14 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2025 | 7 | 7 | #10,079 |
| 2024 | 5 | 5 | #13,032 |
| 2021 | 10 | 10 | #7,809 |
| 2017 | 8 | 8 | #9,170 |
| 2016 | 6 | 6 | #11,253 |
| 2015 | 7 | 7 | #9,963 |
| 2014 | 6 | 6 | #11,254 |
| 2013 | 10 | 10 | #7,737 |
| 2012 | 11 | 11 | #7,232 |
| 2011 | 9 | 9 | #8,325 |
| 2010 | 7 | 7 | #10,079 |
| 2009 | 14 | 14 | #6,228 |
| 2008 | 7 | 7 | #10,297 |
| 2007 | 12 | 12 | #6,810 |
| 2006 | 7 | 7 | #9,973 |
| 2005 | 9 | 9 | #7,894 |
| 2004 | 7 | 7 | #9,306 |
| 2003 | 5 | 5 | #11,558 |
| 2002 | 6 | 6 | #9,854 |
| 1999 | 10 | 10 | #6,213 |
| 1998 | 8 | 8 | #7,105 |
| 1997 | 9 | — | #6,287 |
| 1996 | 5 | — | #9,580 |
| 1995 | 5 | — | #9,406 |
| 1993 | 6 | — | #8,030 |
| 1992 | 6 | — | #7,839 |
| 1980 | 6 | — | #5,826 |