| Party: | Republican |
| Birth Date: | 3 June 1918 |
| Birth Place: | Dalton, Georgia, U.S. |
| Children: | 3 |
| State Senate: | Georgia |
| Term Start: | 1963 |
| Term End: | 1965 |
| Successor: | W. W. Fincher Jr. |
| Predecessor: | Charles A. Pannell |
| District: | 54th |
Reese Samuel Thomas (June 3, 1918 – July 14, 2011), also known as R. S. Thomas, was an American politician from Georgia. He served in the Georgia State Senate as a Republican from 1963 to 1965.
Thomas was born on June 3, 1918, in Dalton, Georgia,[1] to Sam W. Thomas and Ellen (Patterson) Thomas. He graduated from Pleasant Grove High School in 1935.
Thomas was elected in a special election following the vacancy of the previous senator, Charles A. Pannell. He won the special election, 3,275 to 2,348 votes,[2] defeating James H. Phillips.[3] He was defeated for reelection in 1964, losing to W. W. Fincher Jr.[4]
Thomas married his wife, Margaret Strickland, on August 31, 1941. Together they had three children. He died on July 14, 2011, aged 93.[5]