Casmer is a very rare variant of Casimir that was most common in the 1910s and has all but disappeared.
Casmer is a boy name. It last appears in U.S. records in 1933. Casmer was first reported in SSA data in 1911 and peaked in 1918 (30 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 1933 | 5 | — | #3,720 |
| 1930 | 5 | — | #4,081 |
| 1929 | 6 | — | #3,612 |
| 1925 | 9 | — | #2,964 |
| 1924 | 7 | — | #3,544 |
| 1923 | 9 | — | #2,977 |
| 1922 | 13 | — | #2,362 |
| 1921 | 19 | — | #1,839 |
| 1920 | 21 | — | #1,704 |
| 1919 | 22 | — | #1,580 |
| 1918 | 30 | — | #1,294 |
| 1917 | 27 | — | #1,330 |
| 1916 | 23 | — | #1,464 |
| 1915 | 21 | — | #1,512 |
| 1914 | 12 | — | #1,885 |
| 1913 | 10 | — | #1,825 |
| 1912 | 7 | — | #2,079 |
| 1911 | 9 | — | #1,205 |