| Thomas Scott Davidson | |
| Office1: | Ontario MPP |
| Term Start1: | 1914 |
| Term End1: | 1919 |
| Predecessor1: | John Wesley Westbrook |
| Successor1: | Harry Nixon |
| Constituency1: | Brant North |
| Party: | Liberal |
| Birth Date: | 11 March 1858 |
| Birth Place: | South Dumfries Township, Canada West |
| Death Place: | Paris, Ontario |
| Occupation: | Auctioneer |
Thomas Scott Davidson (March 11, 1858 – June 6, 1933) was a Canadian politician and auctioneer. He represented Brant North in the Legislative Assembly of Ontario from 1914 to 1919 as a Liberal member.
He was born in South Dumfries Township, Canada West, the son of James Davidson. He served on the council for Brant County and was warden in 1900. In 1892, he married Marion Bullock. He was an unsuccessful candidate for a seat in the federal parliament in 1926. He died in Paris, Ontario in 1933.