| Allen Jeardeau | |
| Birth Date: | 1 April 1866 |
| Birth Place: | Grant County, Wisconsin, U.S. |
| Death Place: | Grant County, Wisconsin, U.S. |
| Coach Sport1: | Football |
| Coach Years2: | 1895 |
| Coach Team2: | Platteville Normal |
| Coach Years3: | 1896–1897 |
| Coach Team3: | LSU |
| Coach Years4: | 1898 |
| Coach Team4: | Platteville Normal |
| Coach Sport5: | Baseball |
| Coach Years6: | 1898 |
| Coach Team6: | LSU |
| Overall Record: | 10–2–1 (football) 2–3 (baseball) |
| Championships: | Football 1 SIAA (1896) |
Allen Wilson Jeardeau (April 1, 1866 – April 10, 1900) was an American college football and college baseball coach.[1] He served as the head football coach at the Platteville Normal School—now the University of Wisconsin–Platteville—in 1895 and 1898 and at Louisiana State University (LSU) from 1896 to 1897.[2] In 1896, his first season with the LSU Tigers, Jeardeau led the team to a 6–0 record and a Southern Intercollegiate Athletic Association (SIAA) championship. He was also the head coach of the LSU Tigers baseball team in 1898. Jeardeau was a graduate of the Platteville Normal School and a student at Harvard University. He died of pneumonia on April 10, 1900, at his home near Platteville, Wisconsin.[3] [4]