| Forrest Lothrop | |
| Birth Date: | 16 June 1924 |
| Birth Place: | South Dakota, U.S. |
| Death Place: | Lennox, South Dakota, U.S. |
| Player Years1: | 1946–1948 |
| Player Team1: | South Dakota State |
| Coach Years1: | 1950–1951 |
| Coach Team1: | Beresford HS (SD) |
| Coach Years2: | 1953–1955 |
| Coach Team2: | Dickinson State |
| Overall Record: | 10–10 (college) |
| Championships: | NDIC (1955) |
Forrest Tisdale "Tiz" Lothrop (June 16, 1924 – May 29, 2021) was an American football coach. Lothrop was the sixth head football coach at Dickinson State College—now known as Dickinson State University–in Dickinson, North Dakota, serving for three seasons, from 1953 to 1955, and compiling a record of 10–10.[1]
Lothrop attended high school in Redfield, South Dakota and played college football at South Dakota State University in Brookings, South Dakota. In 1950, he was appointed head football coach at Beresford High School in Beresford, South Dakota.[2]
He died in Lennox, South Dakota in May 2021 at the age of 96.[3]