| Adrian Lindsey | |
| Birth Date: | 15 August 1895 |
| Birth Place: | Vienna, Illinois, U.S. |
| Death Place: | Eudora, Kansas, U.S. |
| Player Sport1: | Football |
| Player Years2: | 1914–1916 |
| Player Team2: | Kansas |
| Player Positions: | Halfback, quarterback |
| Coach Sport1: | Football |
| Coach Years2: | 1919–1921 |
| Coach Team2: | Kansas (assistant) |
| Coach Years3: | 1922–1926 |
| Coach Team3: | Bethany (KS) |
| Coach Years4: | 1927–1931 |
| Coach Team4: | Oklahoma |
| Coach Years5: | 1932 |
| Coach Team5: | Kansas (assistant) |
| Coach Years6: | 1932–1938 |
| Coach Team6: | Kansas |
| Coach Sport7: | Baseball |
| Coach Years8: | 1921 |
| Coach Team8: | Kansas |
| Overall Record: | 66–64–16 (football) 13–2 (baseball) |
| Championships: | 1 KCAC (1925) |
Adrian Hobart "Ad" Lindsey (August 15, 1895 – October 2, 1980) was an American football player and coach of football and baseball.[1] He served as the head football coach at Bethany College in Lindsborg, Kansas from 1922 to 1926, at the University of Oklahoma from 1927 to 1931, and at the University of Kansas from 1932 to 1938, compiling a career college football record of 66–64–16. Lindsey was also the head baseball coach at Kansas for one season in 1921, tallying a mark of 13–2.
Lindsey played football at the University of Kansas from 1914 to 1916. During World War I, he served as a U.S. Army officer in France. As part of the occupation force after the Armistice, Lindsey played right halfback for the 89th Division squad that won the AEF football championship in March 1919. Bob Higgins, Paul Withington, Charles Gerhardt and George Clark were also members of the squad.[2]
Lindsey began the 1932 season at Kansas as an assistant to Homer Woodson Hargiss. Hargiss was fired as head football coach on October 10, 1932, two days after the Jawhawks lost at home to Oklahoma, 21–6. Lindsey succeeded Hargiss as acting head coach with athletic director and head basketball coach Phog Allen overseeing the football program in a supervisory role.[3]