| Leonard J. Umnus | |
| Birth Date: | 18 April 1903 |
| Birth Place: | Menominee, Michigan, U.S. |
| Death Place: | Watertown, Wisconsin, U.S. |
| Player Sport1: | Football |
| Player Years2: | 1922–1924 |
| Player Team2: | Illinois |
| Player Positions: | Center |
| Coach Sport1: | Football |
| Coach Years2: | 1925–1927 |
| Coach Team2: | Fairmount/Wichita |
| Coach Years3: | ? |
| Coach Team3: | Jordan College |
| Coach Years4: | 1935–1970 |
| Coach Team4: | Northwestern (WI) |
| Coach Sport5: | Basketball |
| Coach Years6: | 1925–1928 |
| Coach Team6: | Fairmount/Wichita |
| Championships: | |
| Awards: | Wisconsin Football Coaches Hall of Fame Upper Peninsula Sports Hall of Fame[1] |
Leonard J. Umnus (April 18, 1903 – April 13, 1996) was an American football, basketball, and baseball coach.
Umnus enrolled at the University of Illinois in the fall of 1921. While at Illinois he played football with Red Grange under coach Robert Zuppke. Umnus was awarded "letters" for three years as a center and guard. He also was awarded athletic letters for Illinois in boxing.[2]
Umnus was the 15th head football coach at Fairmont College—now known as Wichita State University—in Wichita, Kansas and he held that position for three seasons, from 1925 until 1927, compiling a record of 12–7–4.[3] Fairmont College became the Municipal University of Wichita in 1926.
Between coaching in Wichita and Northwestern College, Umnus started the football program at the now defunct Jordan College in Menominee, Michigan.[4]
Umnus later coached the Northwestern College Trojans[5] in Watertown, Wisconsin (now a part of Martin Luther College in New Ulm, Minnesota).[6] He was the head coach at the school for 35 seasons and his teams produced a record of 135–64–9. At Northwestern, he coached all sports including baseball and basketball.[7]