William Patrick Huizenga is an American politician serving as the U.S. representative for Michigan's 4th congressional district, serving in Congress since 2011. The district, numbered as the 2nd district from 2011 to 2023, covers much of the southwestern corner of the state, including Kalamazoo, Holland and Battle Creek.

Michigan's 4th congressional district is a United States congressional district located in the state of Michigan. The current 4th district contains much of Michigan's old 2nd district, and includes all of Allegan and Van Buren counties, as well as portions of Ottawa, Kalamazoo, Calhoun, and Berrien counties. In 2022, the district was redrawn to start in St. Joseph Township and extend north to Port Sheldon Township. The 4th is currently represented by Republican Bill Huizenga, who previously represented the old 2nd district.