| Lou Young | |
| Birth Date: | 19 February 1893 |
| Birth Place: | Philadelphia, Pennsylvania, U.S. |
| Death Place: | Philadelphia, Pennsylvania, U.S. |
| Player Years1: | 1912–1914 |
| Player Team1: | Penn |
| Player Positions: | End, halfback |
| Coach Years1: | 1922 |
| Coach Team1: | Penn (assistant) |
| Coach Years2: | 1923–1929 |
| Coach Team2: | Penn |
| Overall Record: | 49–15–2 |
Louis Alonzo Young (February 19, 1893 – July 19, 1948) was an American college football player and coach. He served as the head football coach at the University of Pennsylvania from 1923 to 1929, compiling a record of 49–15–2. Young played football at Penn from 1912 to 1914, captaining the team in 1913.[1] He died at the age of 56 on July 19, 1948, in Philadelphia.[2]