Casmier is a very rare variant of Casimir that was most common in the 1910s and has all but disappeared.
Casmier is a boy name. It last appears in U.S. records in 1928. Casmier first appears in 1916 and peaked in 1917 (9 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 1928 | 5 | — | #4,245 |
| 1926 | 5 | — | #4,297 |
| 1922 | 5 | — | #4,404 |
| 1921 | 7 | — | #3,577 |
| 1920 | 7 | — | #3,535 |
| 1919 | 6 | — | #3,801 |
| 1918 | 9 | — | #2,914 |
| 1917 | 9 | — | #2,769 |
| 1916 | 5 | — | #3,997 |