| Robert Adam Thompson | |
| Office1: | Ontario MPP |
| Term Start1: | 1902 |
| Term End1: | 1908 |
| Predecessor1: | Thomas Atkins Wardell |
| Successor1: | Gordon Crooks Wilson |
| Constituency1: | Wentworth North |
| Party: | Liberal |
| Birth Date: | 9 May 1860 |
| Birth Place: | Beverly Township, Canada West |
| Occupation: | Merchant |
| Spouse: | Agnes A. Black (m. 1892) |
Robert Adam Thompson (1860 - 1947) was a merchant, miller and politician in Ontario, Canada. He represented Wentworth North in the Legislative Assembly of Ontario from 1902 to 1908 as a Liberal.
Thompson was born on May 9, 1860 in Beverly Township, Canada West. He was educated in Wentworth County schools and at the Canadian Business College in Hamilton. In 1892, Thompson married Agnes A. Black. He served on the Beverley township council for two years and was reeve for two years.[1]