| T. D. Knowles | |
| Birth Date: | 17 May 1868 |
| Birth Place: | Waterbury, Connecticut, U.S. |
| Death Place: | New Haven, Connecticut, U.S. |
| Coach Sport1: | Football |
| Coach Years2: | 1899–1901 |
| Coach Team2: | Connecticut |
| Coach Sport3: | Baseball |
| Coach Years4: | 1899–1901 |
| Coach Team4: | Connecticut |
| Overall Record: | 18–7–1 (football) 12–8–1 (baseball) |
Thomas Dodd Knowles (May 17, 1868 – September 20, 1935) was an American college football and college baseball coach. He served as the head football coach at the University of Connecticut from 1899 to 1901.[1] He also served as UConn's head baseball coach from 1899 to 1901.[2]