| John McKay | |
| Office1: | Ontario MPP |
| Term Start1: | 1894 |
| Term End1: | 1898 |
| Predecessor1: | John McKay |
| Successor1: | Adam Edward Vrooman |
| Constituency1: | Victoria West |
| Party: | Liberal |
| Birth Date: | 28 September 1854 |
| Birth Place: | Bowmanville, Canada West |
| Death Place: | Lindsay, Ontario |
Samuel John Fox (September 28, 1854 - July 3, 1911) was an Ontario farmer and political figure. He represented Victoria West in the Legislative Assembly of Ontario as a Conservative member from 1898 to 1911.
He was born in Bowmanville, Canada West. He first entered the printing trade but later joined his father in brick making. Fox also became a tile maker. In 1877, he married Rosanna Free.