Jasun is a very rare variant of Jason that was most common in the 1980s and has all but disappeared.
Jasun is a boy name. It last appears in U.S. records in 2010. Jasun first appears in 1971 and peaked in 1981 (13 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2010 | 6 | 6 | #11,348 |
| 2007 | 5 | 5 | #13,219 |
| 2006 | 7 | 7 | #10,034 |
| 2004 | 6 | 6 | #10,547 |
| 2003 | 7 | 7 | #9,090 |
| 2000 | 6 | 6 | #9,614 |
| 1999 | 6 | 6 | #9,215 |
| 1997 | 9 | — | #6,316 |
| 1996 | 7 | — | #7,483 |
| 1988 | 5 | — | #7,801 |
| 1986 | 5 | — | #7,183 |
| 1984 | 5 | — | #6,760 |
| 1981 | 13 | — | #3,305 |
| 1979 | 8 | — | #4,595 |
| 1978 | 5 | — | #6,230 |
| 1977 | 11 | — | #3,477 |
| 1976 | 12 | — | #3,160 |
| 1975 | 9 | — | #3,773 |
| 1973 | 9 | — | #3,561 |
| 1972 | 7 | — | #4,179 |
| 1971 | 8 | — | #3,788 |