Jasn is a very rare variant of Jason that was most common in the 1980s and has all but disappeared.
Jasn is a boy name. It last appears in U.S. records in 1987. Jasn first appears in 1970 and peaked in 1985 (30 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 1987 | 16 | — | #3,121 |
| 1986 | 20 | — | #2,637 |
| 1985 | 30 | — | #1,939 |
| 1984 | 18 | — | #2,649 |
| 1983 | 9 | — | #4,299 |
| 1982 | 14 | — | #3,186 |
| 1981 | 12 | — | #3,499 |
| 1980 | 13 | — | #3,338 |
| 1979 | 17 | — | #2,710 |
| 1978 | 6 | — | #5,371 |
| 1977 | 9 | — | #3,985 |
| 1976 | 9 | — | #3,848 |
| 1975 | 15 | — | #2,689 |
| 1974 | 13 | — | #2,868 |
| 1973 | 11 | — | #3,111 |
| 1972 | 7 | — | #4,178 |
| 1970 | 5 | — | #5,050 |