Douglas Rudy Magnus (born November 1950) is an American, Minnesota politician and a former member of the Minnesota Senate, who represented District 22, which includes all of Cottonwood, Jackson, Murray, Nobles, Pipestone and Rock counties in the southwestern part of the state. A Republican, he is also a farmer. On March 5, 2012, Magnus announced that he would not seek re-election to the Senate in the November 2012 general election. His term ended on January 7, 2013.