Calvin Dean Johnson (born November 22, 1898) was a Republican politician who represented the state of Illinois in the United States House of Representatives during the 78th Congress. Serving as a member of the U.S. House from Illinois’s 22nd congressional district, he held office from January 6, 1943, to January 3, 1945. His tenure in Congress placed him among the historical members of the legislative branch during the World War II era.

Johnson served a single term as a Representative and is recorded as a former officeholder. While specific details of his committee assignments, legislative initiatives, or congressional office arrangements are not provided in the available metadata, his service as a Republican representative for Illinois’s 22nd district from 1943 to 1945 marks his principal role in national public life.