David Dennis Warmack (December 19, 1947 – July 6, 2017) was an American football coach. He served as the head football coach at Kalamazoo College in Kalamazoo, Michigan for eight seasons, from 1990 to 1997, compiling a record of 33–38–1.
Warmack was born on December 19, 1947, in Kalamazoo, Michigan. He earned a Bachelor of Arts degree from Western Michigan University and master's degree from Central Connecticut State University. Warmack died on July 6, 2017, in Paw Paw, Michigan, after suffering from cancer.