William Van Regenmorter (January 29, 1939 – June 18, 2012) was a Republican politician from the U.S. state of Michigan, representing Ottawa County. He served as the representative of Michigan's 55th district from 1982 to 1990 and the 74 district from 2002 to 2006. Between those terms, from 1990 to 2002, he served as senator of the 22nd district. He authored Michigan's Crime Victims Rights Act, which has served as the national model for . He also authored and passed two successful amendments to the Michigan Constitution (art. I, sec. 20 and art. I, sec. 24).