Jef is a very rare variant of Jeff that was most common in the 1960s and has all but disappeared.
Jef is a boy name. It last appears in U.S. records in 1973. Jef was first reported in SSA data in 1953 and peaked in 1963 (15 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 1973 | 6 | — | #4,771 |
| 1972 | 7 | — | #4,183 |
| 1971 | 9 | — | #3,496 |
| 1970 | 5 | — | #5,057 |
| 1969 | 6 | — | #4,150 |
| 1966 | 8 | — | #3,105 |
| 1965 | 8 | — | #3,103 |
| 1964 | 7 | — | #3,433 |
| 1963 | 15 | — | #2,157 |
| 1962 | 7 | — | #3,454 |
| 1961 | 8 | — | #3,219 |
| 1960 | 12 | — | #2,472 |
| 1959 | 7 | — | #3,421 |
| 1958 | 5 | — | #4,213 |
| 1957 | 5 | — | #4,252 |
| 1956 | 9 | — | #2,871 |
| 1953 | 5 | — | #4,066 |