John J. Bernhagen (March 19, 1934 – September 26, 2020) was an American politician, businessman, and farmer.
Bernhagen served in the United States Army from 1954 to 1956.
He received his bachelor's degree from Metropolitan State University and his master's degree from Minnesota State University, Mankato.
Bernhagen also went to University of Minnesota for graduate studies.
Bernhagen was a farmer and business consultant.