| Harry Jacoby | |
| Birth Date: | 2 September 1910 |
| Player Sport1: | Football |
| Player Years2: | 1932–1934 |
| Player Team2: | Idaho |
| Player Positions: | Halfback |
| Coach Sport1: | Football |
| Coach Years2: | 1934–1935 |
| Coach Team2: | Soda Springs HS (ID) |
| Coach Years3: | 1937 |
| Coach Team3: | Idaho (assistant) |
| Coach Years4: | 1938–1941 |
| Coach Team4: | Boise |
| Coach Years5: | 1946 |
| Coach Team5: | Boise |
| Coach Sport6: | Basketball |
| Coach Years7: | 1934–1936 |
| Coach Team7: | Soda Springs HS (ID) |
| Coach Years8: | 1939–1941 |
| Coach Team8: | Boise |
| Overall Record: | 14–15–2 (football) 24–21 (basketball) |
Harry Joseph Jacoby (September 2, 1910 – November 9, 1993) was an American football and basketball coach and athletics administrator. He served as the third head football coach at Boise Junior College—now Boise State University—coaching in five seasons. His first tenure lasted from 1938 through the first four games of 1941, when he was called by the United States Army for active duty at Fort Warren, Wyoming. The final three games in 1941 were coached by George "Stub" Allison, who also took over athletic director duties.[1] [2] After World War II ended, Jacoby resumed coaching duties for the Broncos in 1946. He compiled an overall record of 14–15–2. Jacoby was also the head basketball coach at Boise Junior College for two seasons, from 1939–40 to 1940–41, tallying a mark of 24–21.
A native of Bonners Ferry, Idaho, Jacoby played college football at the University of Idaho. He coached at Soda Springs High School in Soda Springs, Idaho and then returned to Idaho as an assistant to Ted Bank.[3]