| Bob Doak | |
| Birth Date: | March 16, 1881 |
| Player Sport1: | Basketball |
| Player Years2: | 1905–1909 |
| Player Team2: | Guilford |
| Player Sport3: | Basketball |
| Player Years4: | 1906–1909 |
| Player Team4: | Guilford |
| Coach Sport1: | Football |
| Coach Years2: | 1916–1926 |
| Coach Team2: | Guilford |
| Coach Sport3: | Basketball |
| Coach Years4: | 1910–1915 |
| Coach Team4: | Elon |
| Coach Years5: | 1915–1916 |
| Coach Team5: | Duke |
| Coach Sport6: | Baseball |
| Coach Years7: | 1912–1915 |
| Coach Team7: | Guilford |
| Coach Years8: | 1916–1927 |
| Coach Team8: | Elon |
| Admin Years1: | 1912–1915 |
| Admin Team1: | Elon |
| Admin Years2: | 1916–1927 |
| Admin Team2: | Guilford |
| Overall Record: | 13–51–5 (football) |
Robert Sydens Doak (March 16, 1881 - July 1, 1942)[1] was an American football, basketball, and baseball coach. His stops included Elon University, Duke University, and Guilford College. Doak also served as Elon's and Guilford's athletic director during his tenures at the school. He was succeeded by his brother, Chick Doak, as Duke's head basketball coach in 1916.[2]