John Parker Gregg (September 14, 1876 – June 11, 1963) was an American college football player and coach.

He served as the head football coach at Louisiana State University (LSU) for one season in 1899, compiling a record of 2–4.

[2] During World War I he served as a captain in the Judge Advocate's Office.

[3] Gregg was born on September 14, 1876, in Elm Grove, Wisconsin.

This biographical article relating to a college football coach first appointed in the 1890s is a stub.