Michael Donald Johnson (April 7, 1944 – July 30, 2022) was an American Republican politician and businessman from the U.S. state of Oklahoma who served in the Oklahoma State Senate from district 22 from 1998 until he was term limited in 2010. Prior to his state politics career, Johnson also was active in local politics in Edmond, Oklahoma in the late 1970's, serving as the city treasurer from 1977 to 1981. In the 1980's he returned to Kingfisher, Oklahoma where he served on the local school board between 1985 and 1995 and operated his family's Chrysler dealership. He retired from politics in 2010.