Prentiss Porter Douglass (June 23, 1887 – November 9, 1949) was an American college football player and coach.

A native of Martinsville, Illinois, Douglass graduated from the Culver Military Academy and the University of Michigan.

His 1911 Kentucky State College Wildcats football team finished the season a record of 7–3 .

The season's highlights included the final two games, victories over Central University and Tennessee.

After one year at Kentucky, Douglass returned to the University of Michigan, where he served as an assistant football coach from 1912 to 1919.