Mark Fredrick Farner is an American musician. He was the original singer and guitarist of the rock band Grand Funk Railroad, which he co-founded in 1969, and later as a contemporary Christian musician.

Grand Funk Railroad is an American rock band formed in Flint, Michigan, in 1969 by Mark Farner, Don Brewer, and Mel Schacher (bass). The band achieved peak popularity and success during the 1970s with hit songs such as "We're an American Band", "I'm Your Captain ", "Some Kind of Wonderful", "Walk Like a Man", "The Loco-Motion", "Bad Time" and "Inside Looking Out". Grand Funk released six platinum and seven gold-certified albums between their recording debut in 1969 and their first disbandment in 1976.