| William Long | |
| Office1: | 7th Mayor of Columbus |
| Term Start1: | 1827 |
| Term End1: | 1833 |
| Appointer1: | Burough Council of Columbus |
| Predecessor1: | James Robinson |
| Successor1: | Philo H. Olmsted |
| Profession: | Mayor Member of Burough Council County treasurer |
| Birth Date: | 24 January 1781 |
| Spouse: | Rebekah Morrison Suddick |
William Long (January 24, 1781 – February 22, 1851) was the seventh mayor of Columbus, Ohio. He served Columbus for over five terms. His successor was Philo H. Olmsted. He died on February 22, 1851.