John Chapman (October 18, 1740 – January 27, 1800) was a member of the United States House of Representatives from Pennsylvania.John Chapman was born in Wrightstown Township, Pennsylvania. He was commissioned justice of the peace February 25, 1779, and was one of the justices commissioned judge of the court of common pleas of Bucks County the same year. He moved to Upper Makefield Township, Pennsylvania, prior to 1776.