Douglas W. Weaver (born October 15, 1930) is a former American football player, coach, and college athletics administrator. He served as the head football coach at Kansas State University from 1960 to 1966 and at Southern Illinois University Carbondale from 1974 to 1975, compiling a career college football record of 11–78–2. His Kansas State Wildcats teams posted two of the longest losing streaks in college football history. Weaver was also the athletic director at the Georgia Institute of Technology from 1976 to 1979 and at Michigan State University from 1979 to 1989.