Brigadier General Donald Dunwody Blackburn (September 14, 1916 – May 24, 2008) was a United States Army Special Forces officer, best known for his significant command and developmental roles in the U.S. Army Special Forces. He was also the commander of the highly classified Studies and Observations Group from 1965 to 1966. Since most of his military career involved clandestine operations, many of Blackburn's exploits remain unknown to the general public.