Robert Graham founded the Vancouver, Washington-based pizza chain with gross sales of $827,000,000, established in 1995.
Rick Rosenfield and Larry Flax founded the Playa Vista, California-based pizza chain with gross sales of $840,000,000, established in 1985.
John Schnatter founded the Louisville, Kentucky-based pizza chain with gross sales of $3,695,000,000, established in 1984.
Mike and Marian Ilitch founded the Detroit, Michigan-based pizza chain with gross sales of $4,000,000,000, established in 1959.
Dan and Frank Carney founded the Plano, Texas-based pizza chain with gross sales of $12,034,000,000, established in 1958.
James and Tom Monaghan founded the Ann Arbor, Michigan-based pizza chain with gross sales of $12,252,100,000, established in 1960.