| Frank Gullum | |
| Birth Date: | 18 May 1885 |
| Birth Place: | Hamden, Ohio, U.S. |
| Death Place: | Athens, Ohio, U.S. |
| Player Sport1: | Football |
| Player Years2: | 1904 |
| Player Team2: | Ohio |
| Player Positions: | Halfback |
| Coach Sport1: | Football |
| Coach Years2: | 1918–1919 |
| Coach Team2: | Ohio |
| Coach Sport3: | Basketball |
| Coach Years4: | 1918–1920 |
| Coach Team4: | Ohio |
| Coach Sport5: | Baseball |
| Coach Years6: | 1919 |
| Coach Team6: | Ohio |
| Overall Record: | 7–5–1 (college football) 10–10 (college basketball) 6–1 (college baseball) |
Frank Barnhart Gullum (May 18, 1885 – April 19, 1965) was an American college football, basketball, and baseball coach. He served as the head football coach at Ohio University in Athens, Ohio from 1918 to 1919, compiling a record of 7–5–1.[1] He was the head basketball coach at Ohio for two seasons, from 1918 and 1920, amassing a record of 10–10,[2] and the school's head baseball coach in 1919, tallying a mark of 6–1. Gullum was also a professor of chemistry at the Ohio University. Before coming to Ohio University, he coached football at East High School in Columbus, Ohio, where he mentored Chic Harley, who went on to star at Ohio State University. Gullum died on April 19, 1965, at Sheltering Arms Hospital in Athens.[3]