| James Karl Luck | |
| Birth Date: | 1 October 1891 |
| Player Sport1: | Football |
| Player Years2: | 1915–1916 |
| Player Team2: | Tennessee |
| Player Positions: | Fullback |
| Coach Sport1: | Football |
| Coach Years2: | 1922–1924 |
| Coach Team2: | East Tennessee State |
| Coach Sport3: | Basketball |
| Coach Years4: | 1923–1925 |
| Coach Team4: | East Tennessee State |
James Karl Luck (October 1, 1891 – September 27, 1971) was an American football and basketball coach. He served as the head football coach (1922–1924) and head men's basketball coach (1923–1925) at East Tennessee State University.[1]
Luck lettered as a fullback for the Tennessee Volunteers football team in 1915 and 1916.[2]