Bill L. Van Gerpen (born March 16, 1949 in Scotland, South Dakota) is an American politician and a Republican member of the South Dakota Senate representing District 19 since January 8, 2013. Van Gerpen served several non-consecutive periods in the South Dakota Legislature from January 1997 until January 1999 from January 2001 until January 2007, and from January 2009 until January 2011 in the South Dakota House of Representatives District 19 seat.