| Frank Rader | |
| Birth Date: | April 8, 1848 |
| Death Place: | Lake Elsinore, California |
| Order: | 22nd |
| Office: | Mayor of Los Angeles |
| Term Start: | December 12, 1894 |
| Term End: | December 16, 1896 |
| Predecessor: | Thomas E. Rowan |
| Successor: | Meredith P. Snyder |
| Party: | Republican |
Frank Rader (April 8, 1848 - March 28, 1897) served as the 22nd Mayor of Los Angeles from 1894 until 1896.
He died at age 49 in Lake Elsinore, California. He is interred in Angelus-Rosedale Cemetery, Los Angeles.