Donald L. Frerichs (January 3, 1931 – June 27, 2019) was an American businessman and politician.
He lived in Worthington, Minnesota and graduated from Worthington Senior High School, in 1949, and from Minnesota State University, Mankato.
Frerichs was involved with the hardware, real estate, and investment businesses.
Frerichs served in the Minnesota House of Representatives from 1981 to 1997 and was a Republican.
Frerichs died at St. Mary's Hospital in Rochester, Minnesota.