| Ike Armstrong | |
| Birth Date: | 8 June 1895 |
| Birth Place: | Fort Madison, Iowa, U.S. |
| Death Place: | Corona Del Mar, California, U.S. |
| Player Sport1: | Football |
| Player Years2: | 1920s |
| Player Team2: | Drake |
| Player Positions: | Fullback |
| Coach Sport1: | Football |
| Coach Years2: | 1925–1949 |
| Coach Team2: | Utah |
| Coach Sport3: | Basketball |
| Coach Years4: | 1925–1927 |
| Coach Team4: | Utah |
| Admin Years1: | 1925–1950 |
| Admin Team1: | Utah |
| Admin Years2: | 1950–1963 |
| Admin Team2: | Minnesota |
| Overall Record: | 141–55–15 (football) 9–18 (basketball) |
| Bowl Record: | 1–1 |
| Championships: | Football 7 RMC (1926, 1928–1933) 6 Mountain States / Skyline Six (1938, 1940–1942, 1947–1948) |
| Cfbhof Year: | 1957 |
| Cfbhof Id: | 1438 |
Isaac John Armstrong (June 8, 1895 – September 4, 1983) was an American football player, coach of football, basketball, and track, and college athletics administrator. He served as the head football coach at the University of Utah from 1925 to 1949, compiling a record of 141–55–15. Ike Armstrong was the son of George Henry and Margaret Prudence (Gump) Armstrong.
Under Armstrong, Utah won 13 conference championships, seven in the Rocky Mountain Conference and six in the Mountain States / Skyline Six Conference. Armstrong's 25-year tenure is the longest of any Utah Utes football head coach and his 141 wins are the second most in program history. Armstrong also coached Utah's basketball and track teams and served as the school's athletic director. He attended Drake University, where he played college football as a fullback. From 1950 to 1963, he served the athletic director at the University of Minnesota. Armstrong was inducted into the College Football Hall of Fame as a coach in 1957.
Armstrong died of pneumonia, on September 4, 1983, at the Flagship Convalescent Home in Corona Del Mar, California.[1]