Ritha is a very rare girls' name that was most common in the 1950s and has all but disappeared.
Ritha is a girl name. It last appears in U.S. records in 1978. Ritha first appears in 1916 and peaked in 1952 (13 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 1978 | 5 | — | #11,032 |
| 1964 | 5 | — | #7,573 |
| 1963 | 6 | — | #6,441 |
| 1962 | 5 | — | #7,355 |
| 1961 | 7 | — | #5,723 |
| 1959 | 6 | — | #6,081 |
| 1957 | 8 | — | #4,827 |
| 1956 | 8 | — | #4,749 |
| 1954 | 13 | — | #3,291 |
| 1953 | 6 | — | #5,542 |
| 1952 | 13 | — | #3,167 |
| 1951 | 9 | — | #3,941 |
| 1949 | 7 | — | #4,572 |
| 1948 | 5 | — | #5,864 |
| 1947 | 7 | — | #4,684 |
| 1945 | 9 | — | #3,342 |
| 1939 | 6 | — | #4,162 |
| 1935 | 5 | — | #4,783 |
| 1929 | 5 | — | #5,155 |
| 1916 | 5 | — | #5,015 |