Richard Posthumus (/ˈpɑːstjuːməs/; born July 19, 1950) is an American businessman, and politician. He was the 61st Lieutenant Governor of Michigan and majority leader of the Michigan Senate. In 2002, he was the unsuccessful Republican nominee for Governor of Michigan. Posthumus grew up on a dairy farm in Alto, Michigan, outside of Grand Rapids. He graduated from Michigan State University, during which he served as chairman of the College Republicans and as a vice chairman of the Michigan Republican Party.