| W. Rice Warren | |
| Birth Date: | 22 December 1885 |
| Birth Place: | Harrisonburg, Virginia, U.S. |
| Death Place: | Orange County, Virginia, U.S. |
| Player Sport1: | Football |
| Player Years2: | 1904–1905 |
| Player Team2: | Virginia |
| Player Positions: | End |
| Coach Sport1: | Football |
| Coach Years2: | 1907–1911 |
| Coach Team2: | Randolph–Macon |
| Coach Years3: | 1912 |
| Coach Team3: | Virginia (assistant) |
| Coach Years4: | 1913 |
| Coach Team4: | Virginia |
| Coach Years5: | 1916 |
| Coach Team5: | South Carolina |
| Coach Years6: | 1920–1921 |
| Coach Team6: | Virginia |
| Coach Sport7: | Baseball |
| Coach Years8: | 1921 |
| Coach Team8: | Virginia |
| Admin Years1: | 1907–1912 |
| Admin Team1: | Randolph–Macon |
| Admin Years2: | 1922–1923 |
| Admin Team2: | Randolph–Macon |
| Overall Record: | 41–28–5 7–15 (baseball) |
| Championships: | 3 EVIAA (1908, 1910–1911) |
William Rice Warren (December 22, 1885 – November 17, 1969) was an American football player and coach of football and baseball. He served as the head football coach at Randolph–Macon College from 1907 to 1911, the University of Virginia in 1913, 1920 and 1921 and the University of South Carolina in 1916, compiling a college football coaching record of 41–28–5. Warren was also the head baseball coach at Virginia for one season in 1921, tallying a mark of 7–15. In addition he was professor of physical training circa 1920 at the university.[1] Warren later worked as a physician, having obtained his medical degree from the University of Virginia.[2] He died in 1969 in Orange County, Virginia.