Grover Clifton "G. C." Spencer (July 9, 1925 – September 20, 2007) was a NASCAR driver who competed in 415 Grand National/Winston Cup Series races from 1958 to 1977. Despite never winning a race, he had 55 top-5 finishes and 138 top tens, including 7 second-place finishes. Born in Owensboro, Kentucky, he was a dominant short-track racer in the 1940s and 1950s. He served in World War II with the U.S. Navy. He sold his team and equipment in 1983, and his No. 49 became the No. 4 of Morgan-McClure Motorsports. Spencer acted as the team manager to the team for its first three years.