George S. Mickelson, American captain, lawyer, and politician, 28th Governor of South Dakota (b. 1941)
George Speaker Mickelson (January 31, 1941 – April 19, 1993) was an American politician and Vietnam War veteran who served as the 28th governor of South Dakota from 1987 until his death in 1993 in a plane crash near Zwingle, Iowa.

His father, George T. Mickelson, was also governor of South Dakota, from 1947 to 1951. To date, the Mickelsons are the only father-son duo to have held that office. He is a member of the prominent Mickelson family of South Dakota.