Undra is a rare name used for both girls and boys that was most common in the 1960s and has all but disappeared.
Undra is predominantly a boy name. It last appears in U.S. records in 2005. Undra first appears in 1955 and peaked in 1966 (36 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2005 | 5 | 5 | — | #13,241 |
| 2003 | 5 | 5 | — | #12,660 |
| 1997 | 10 | — | — | #6,073 |
| 1995 | 5 | — | — | #10,254 |
| 1994 | 7 | — | — | #7,725 |
| 1993 | 8 | — | — | #6,785 |
| 1991 | 5 | — | — | #9,569 |
| 1990 | 10 | — | — | #5,354 |
| 1989 | 7 | — | — | #6,889 |
| 1988 | 13 | — | — | #3,905 |
| 1987 | 6 | — | — | #6,906 |
| 1986 | 14 | — | — | #3,432 |
| 1985 | 8 | — | — | #5,120 |
| 1984 | 9 | — | — | #4,534 |
| 1983 | 7 | — | — | #5,453 |
| 1982 | 11 | — | — | #3,949 |
| 1981 | 8 | — | — | #4,933 |
| 1980 | 12 | — | — | #3,600 |
| 1979 | 11 | — | — | #3,799 |
| 1978 | 7 | — | — | #5,031 |
| 1977 | 15 | — | — | #2,900 |
| 1976 | 17 | — | — | #2,591 |
| 1975 | 24 | — | — | #1,998 |
| 1974 | 17 | — | #10,183 | #3,114 |
| 1973 | 22 | — | #9,737 | #2,397 |
| 1972 | 32 | — | #8,237 | #1,767 |
| 1971 | 29 | — | #5,986 | #2,118 |
| 1970 | 23 | — | #9,290 | #2,208 |
| 1969 | 20 | — | — | #1,910 |
| 1968 | 26 | — | — | #1,569 |
| 1967 | 38 | — | #4,604 | #1,473 |
| 1966 | 41 | — | #7,559 | #1,279 |
| 1965 | 30 | — | #7,476 | #1,592 |
| 1964 | 21 | — | — | #1,789 |
| 1963 | 16 | — | — | #2,108 |
| 1962 | 26 | — | #4,836 | #2,030 |
| 1961 | 23 | — | #6,528 | #2,065 |
| 1960 | 12 | — | #7,251 | #3,645 |
| 1959 | 6 | — | — | #3,962 |
| 1958 | 5 | — | #6,973 | — |
| 1957 | 7 | — | — | #3,535 |
| 1956 | 8 | — | — | #3,199 |
| 1955 | 7 | — | — | #3,483 |