Clair L. Nelson (April 22, 1940 – January 13, 2019) was an American politician, businessman, and educator.
Nelson was born in Elk Lake Township, Grant County, Minnesota and graduated from Barrett High School in Barrett, Minnesota.
Nelson served in the Minnesota National Guard and graduated from Minnesota State University Moorhead with a bachelor's degree in physical education and mathematics.
Nelson served in the Minnesota House of Representatives from 1987 to 1990 and was a Democrat.
Nelson died at Sanford Health in Bismarck, North Dakota.