Craig Frost (born April 20, 1948) is an American musician who rose to prominence as a member of the rock band Grand Funk Railroad, which he joined in 1973 after working with them the previous year.
He also contributed significantly to Grand Funk as a songwriter, in partnership with drummer Don Brewer.
After the initial breakup of Grand Funk Railroad in 1977, Frost joined with former bandmates Don Brewer and bassist Mel Schacher to form the short-lived band Flint.
After its disbanding, he joined Bob Seger & the Silver Bullet Band, where he remained for over two decades.
In July 2005, Frost "sat in" at a concert in North Branch, Michigan for the first time since 1977 with Grand Funk.