Gary Clyde Bettenhausen (November 18, 1941 – March 16, 2014) was an American racing car driver. He was the winner the 1967 and 1970 Turkey Night Grand Prix, the 1972 Astro Grand Prix, and the 1976 Hut Hundred.

Bettenhausen was born in Blue Island, Illinois, raised in Tinley Park, Illinois, he graduated in 1962 from Bremen High School in Midlothian, Illinois.

Bettenhausen's father was Indianapolis 500 and sprint car legend Tony Bettenhausen. His brother was former CART driver and team owner Tony. Another brother, Merle, lost his arm in a fiery crash.

Bettenhausen married his wife Wavelyn on January 4, 1964, and the family had three children, Gary Jr., and twin sons Cary and Todd. They had two grandchildren.

Bettenhausen died on March 16, 2014, in Monrovia, Indiana.

Bettenhausen began as a midget car driver. He finished third in the midget car national points in 1967. He won the first leg of the Astro Grand Prix in 1969, which was held in the Astrodome. He won the 1967 and 1970 Turkey Night Grand Prix, the 1972 Astro Grand Prix, and the 1976 Hut Hundred, on his way to a total of 27 career wins in USAC midget car competition.

Bettenhausen won the 1969 and 1971 sprint car championships.

Bettenhausen won the 1980 and 1983 USAC Dirt Track championships in a Silver Crown car.