| James W. St. Clair | |
| Birth Date: | 20 January 1885 |
| Birth Place: | Houston, Mississippi, U.S. |
| Death Place: | Dallas, Texas, U.S. |
| Alma Mater: | Baylor University |
| Coach Sport1: | Football |
| Coach Years2: | 1915–1919 |
| Coach Team2: | North Texas State Normal |
| Coach Sport3: | Basketball |
| Coach Years4: | 1914–1915 |
| Coach Team4: | North Texas State Normal |
| Coach Years5: | 1916–1920 |
| Coach Team5: | North Texas State Normal |
| Coach Years6: | 1921–1924 |
| Coach Team6: | North Texas State Normal |
| Coach Years7: | 1924–1938 |
| Coach Team7: | SMU |
| Coach Sport8: | Baseball |
| Coach Years9: | 1922–1924 |
| Coach Team9: | North Texas State Normal |
| Coach Years10: | 1927 |
| Coach Team10: | SMU |
| Coach Years11: | 1931–1933 |
| Coach Team11: | SMU |
| Admin Years1: | 1938–1945 |
| Admin Team1: | SWC (exec. sec.) |
| Overall Record: | 20–11–2 (football) 190–129 (basketball) 34–60–1 (baseball) |
James Watson St. Clair (January 20, 1885 – May 4, 1945) was an American football, basketball, and baseball coach. He served as head football coach at North Texas State Normal College, now the University of North Texas, from 1915 to 1919, compiling a 20–11–2 record.
St. Clair died of a heart attack on May 4, 1945, at this home in Dallas.[1]