Calvin Potter (born November 3, 1945) is a retired American teacher and Democratic politician from Sheboygan County, Wisconsin. He served 8 years in the Wisconsin Senate (1991–1999) and 16 years in the State Assembly (1975–1991).
Potter was born and raised in Sheboygan, Wisconsin. He graduated from Sheboygan North High School and attended the University of Wisconsin-Sheboygan, before earning his bachelor's degree from Lakeland College in 1968.
Potter was elected to the Assembly in 1974. Later, he was a member of the Senate. Previously, he had chaired the Sheboygan County Democratic Party.