| Martha Worst | |
| Birth Name: | Martha Virginia Worst |
| Full Name: | Martha Virginia Smith |
| Birth Place: | Chicago, Illinois, U.S. |
| Death Place: | Chico, California, U.S. |
| Sport: | Athletics |
| Event: | Javelin throw |
| Pb: | 40.13 m (1936) |
| Club: | Metro Social and Athletic Association |
| Show-Medals: | yes |
Martha Virginia Worst (later Smith, January 23, 1911 – December 9, 1981) was an American javelin thrower. In 1936 she won the national AAU title and placed ninth at the Berlin Olympics.