| Thom Watson | |
| State House: | Maine |
| District: | 62nd |
| Term Start: | December 4, 2002 |
| Term End: | May 3, 2010 |
| Preceded: | Arthur Mayo |
| Succeeded: | Michael Clarke |
| Birth Name: | Thomas Riley Watson |
| Birth Date: | 11 March 1947 |
| Birth Place: | Minden, Louisiana, U.S. |
| Party: | Democratic |
| Spouse: | Sherry |
| Residence: | Bath, Maine |
| Education: | University of South Carolina Naval Postgraduate School University of Maine |
| Allegiance: |  United States |
| Branch: | United States Navy |
| Battles: | Vietnam War |
Thomas Riley Watson (born March 11, 1947) is an American attorney and politician who served as a member of the Maine House of Representatives. He resigned in 2010 in order to accept a position with the Maine Workers’ Compensation Board.[1]