Onetta is a very rare girls' name that was most common in the 1910s and has all but disappeared.
Onetta is a girl name. It last appears in U.S. records in 1967. Onetta first appears in 1915 and peaked in 1915 (11 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 1967 | 5 | — | #7,539 |
| 1958 | 5 | — | #6,752 |
| 1955 | 7 | — | #5,071 |
| 1954 | 6 | — | #5,581 |
| 1952 | 9 | — | #4,035 |
| 1949 | 5 | — | #5,827 |
| 1947 | 5 | — | #5,902 |
| 1945 | 8 | — | #3,607 |
| 1942 | 6 | — | #4,500 |
| 1941 | 5 | — | #4,897 |
| 1939 | 5 | — | #4,771 |
| 1938 | 6 | — | #4,219 |
| 1936 | 5 | — | #4,703 |
| 1935 | 9 | — | #3,104 |
| 1934 | 5 | — | #4,805 |
| 1933 | 9 | — | #3,058 |
| 1931 | 7 | — | #3,765 |
| 1929 | 5 | — | #5,107 |
| 1928 | 8 | — | #3,675 |
| 1927 | 8 | — | #3,785 |
| 1926 | 7 | — | #4,206 |
| 1925 | 8 | — | #3,944 |
| 1923 | 7 | — | #4,271 |
| 1922 | 10 | — | #3,317 |
| 1920 | 5 | — | #5,578 |
| 1916 | 5 | — | #4,973 |
| 1915 | 11 | — | #2,656 |