| William T. Martin | |
| Office1: | 5th Mayor of Columbus |
| Term Start1: | 1824 |
| Term End1: | 1826 |
| Appointer1: | Burough Council of Columbus |
| Predecessor1: | John Laughrey |
| Successor1: | James Robinson |
| Profession: | Mayor Judge Writer County recorder School board member Teacher Justice of the Peace Member of Burough Council |
| Birth Date: | 6 April 1788 |
| Birth Place: | Bedford County, Pennsylvania |
| Death Place: | Columbus, Ohio |
| Restingplace: | Green Lawn Cemetery Columbus, Ohio |
| Residence: | 235 South Front Street Columbus, Ohio |
| Spouse: | Amelia |
| Children: | Benjamin Franklin |
William T. Martin (April 6, 1788 – February 19, 1866) was an American politician who served as the fifth mayor of Columbus, Ohio. He was appointed by the Burough Council of Columbus in 1824 and served Columbus for three consecutive terms. His successor was Philo H. Olmsted. He died on February 19, 1866, and is interred in Green Lawn Cemetery.