John Butler (1946 – April 11, 2003) was a National Football League (NFL) general manager of the Buffalo Bills and the San Diego Chargers.
He was in Buffalo's front office for all of its record four straight trips to the NFL championship game from 1991 to 1994.
As Buffalo's personnel director, he was known for finding big talent at small colleges, such as wide receiver Don Beebe of Chadron State and defensive end Phil Hansen of North Dakota.
He drafted Marcellus Wiley out of Columbia, then signed him as a free agent after he had taken over the Chargers in January 2001.
Butler built the foundation for San Diego's offense by drafting running back LaDainian Tomlinson and quarterback Drew Brees.