Onia is a very rare variant of Ona that was most common in the 1920s and has all but disappeared.
Onia is a girl name. It last appears in U.S. records in 2010. Onia was first reported in SSA data in 1913 and peaked in 1922 (8 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2010 | 5 | 5 | #19,122 |
| 1957 | 5 | — | #6,779 |
| 1956 | 5 | — | #6,640 |
| 1945 | 5 | — | #5,072 |
| 1944 | 6 | — | #4,427 |
| 1942 | 6 | — | #4,501 |
| 1934 | 7 | — | #3,711 |
| 1930 | 6 | — | #4,424 |
| 1927 | 6 | — | #4,680 |
| 1925 | 6 | — | #4,824 |
| 1922 | 8 | — | #3,923 |
| 1921 | 5 | — | #5,681 |
| 1920 | 6 | — | #4,833 |
| 1919 | 5 | — | #5,377 |
| 1917 | 6 | — | #4,463 |
| 1913 | 5 | — | #3,578 |