Cynithia is a very rare variant of Cynthia that was most common in the 1960s and has all but disappeared.
Cynithia is a girl name. It last appears in U.S. records in 1990. Cynithia first appears in 1953 and peaked in 1966 (19 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 1990 | 5 | — | #13,437 |
| 1975 | 5 | — | #9,366 |
| 1974 | 8 | — | #6,364 |
| 1973 | 9 | — | #5,666 |
| 1972 | 8 | — | #6,050 |
| 1969 | 13 | — | #3,993 |
| 1968 | 11 | — | #4,259 |
| 1967 | 10 | — | #4,352 |
| 1966 | 19 | — | #2,861 |
| 1965 | 8 | — | #4,917 |
| 1964 | 12 | — | #3,915 |
| 1963 | 16 | — | #3,199 |
| 1962 | 14 | — | #3,457 |
| 1961 | 15 | — | #3,347 |
| 1960 | 9 | — | #4,514 |
| 1959 | 13 | — | #3,470 |
| 1958 | 10 | — | #3,983 |
| 1957 | 8 | — | #4,606 |
| 1956 | 13 | — | #3,374 |
| 1955 | 7 | — | #4,825 |
| 1953 | 7 | — | #4,668 |