| L. F. "Pop" Klein | |
| Birth Date: | c. 1900 |
| Death Date: | October 14, 1968 (aged 68) |
| Death Place: | Prescott, Arizona, U.S. |
| Alma Mater: | Cotner |
| Coach Sport1: | Football |
| Coach Years2: | 1923–1934 |
| Coach Team2: | Crete HS (NE) |
| Coach Years3: | 1935–1942 |
| Coach Team3: | Kearney State |
| Coach Years4: | 1945–1958 |
| Coach Team4: | Nebraska (assistant) |
| Coach Sport5: | Basketball |
| Coach Years6: | 1923–1935 |
| Coach Team6: | Crete HS (NE) |
| Coach Years7: | 1935–1937 |
| Coach Team7: | Kearney State |
| Coach Years8: | 1945–1946 |
| Coach Team8: | Nebraska |
| Overall Record: | 42–21–1 (college football) 22–28 (college basketball) 89–19 (high school football) 200–54 (high school basketball) |
| Championships: | Football 4 NIAA (1936, 1938, 1941–1942) |
Lloyd Frederick "Pop" Klein (c. 1900 – October 14, 1968) was a coach of football and basketball at the high school and collegiate levels.
He began his career as a football and basketball at Crete High School where he accumulated an 89–19 record in football and 200–54 in basketball.[1] He won a state basketball championship at Crete in 1928.[2]
Klein then moved on to become the head football coach at the University of Nebraska–Kearney where led them to a 42–21–1 in eight seasons. Klein was also the Nebraska–Kearney head men's basketball coach for two seasons (1935–1937) where he led the teams to a 15–15 record.[3] After that, he became an assistant football coach at the University of Nebraska–Lincoln for 14 seasons.[4] During his first year in Lincoln, he stepped in to be the men's basketball coach for one year due to the head coach being ill.[5]
Klein died at the age of 68, on October 14, 1968, at his home in Prescott, Arizona.[6]