Clo is a very rare variant of Cleo that was most common in the 1930s and has all but disappeared.
Clo is a girl name. It last appears in U.S. records in 1943. Clo first appears in 1915 and peaked in 1937 (9 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 1943 | 6 | — | #4,275 |
| 1940 | 9 | — | #3,003 |
| 1939 | 5 | — | #4,370 |
| 1938 | 7 | — | #3,512 |
| 1937 | 9 | — | #2,978 |
| 1934 | 5 | — | #4,399 |
| 1932 | 7 | — | #3,634 |
| 1916 | 5 | — | #4,548 |
| 1915 | 6 | — | #3,866 |