| Justa Lindgren | |
| Birth Date: | 28 July 1878 |
| Birth Place: | Illinois, U.S. |
| Death Place: | Urbana, Illinois, U.S. |
| Player Years1: | 1898–1901 |
| Player Team1: | Illinois |
| Coach Years1: | 1902–1903 |
| Coach Team1: | Cornell (IA) |
| Coach Years2: | 1904 |
| Coach Team2: | Illinois |
| Coach Years3: | 1905 |
| Coach Team3: | Illinois (line) |
| Coach Years4: | 1906 |
| Coach Team4: | Illinois |
| Coach Years5: | 1907–1943 |
| Coach Team5: | Illinois (line) |
| Overall Record: | 14–16–2 |
Justa Morris Lindgren (July 28, 1878 – May 29, 1951) was an American college football player and coach. He served as head football coach at Cornell College in Mount Vernon, Iowa from 1902 to 1903 and the University of Illinois in 1904—along with Arthur R. Hall, Fred Lowenthal, and Clyde Matthews—and alone in 1906, compiling a career coaching record of 14–16–2. Lindgren played football at Illinois from 1898 to 1901 and was the captain of the 1901 team. In addition to his two stints as a head coach, he served a line coach for the team until 1943.
Lindgren was also a chemist. He served on the chemistry staff at the University of Illinois and was an analyst for the Illinois Geological Survey and the State Water Survey.[1]