John Patrick Culpepper Jr. (born 1941) is a former American football player and coach.
He served as the head football coach at Northern Illinois University from 1976 to 1979, compiling a record of 14–29–1.
Culpepper was an All-SWC selection in 1961 and a team co-captain as a senior.
He is best remembered for his hit (along with Johnny Treadwell) on Arkansas' Danny Brabham in 1962 that forced a fumble at the goal line and spurred the Longhorns to a 7–3 victory and a SWC title.
This biographical article relating to a college football coach first appointed in the 1970s is a stub.