| R. Thayer Rivers Jr. | |
| State House1: | South Carolina |
| District1: | 122nd |
| Term Start1: | 2001 |
| Term End1: | 2006 |
| Predecessor1: | Clementa C. Pinckney |
| Successor1: | Curtis Brantley |
| Birth Date: | 7 January 1947 |
| Birth Place: | Ridgeland, South Carolina |
| Party: | Democratic |
| Occupation: | lawyer |
Rubin Thayer Rivers Jr. (born January 7, 1947) is a former American politician in the state of South Carolina. He served in the South Carolina House of Representatives from 2001 to 2006 from the 122nd district. He is a lawyer.[1]