Francis G. Dunn was a justice of the South Dakota Supreme Court from 1973 to September 7, 1985, serving as Chief Justice from 1974 to 1978.
Born in Scenic, South Dakota, graduated the University of South Dakota School of Law in 1937.
Dunn was a lawyer in Madison and Sioux Falls. He served as municipal judge of Sioux Falls until Governor Ralph Herseth appointed him as the state's eleventh circuit judge. In 1973, Dunn became a justice of the South Dakota Supreme Court, succeeding Charles S. Hanson, representing the Second district.