King Kullen Grocery Co., Inc. is an American supermarket chain with 42 stores, on Long Island. The company is headquartered in Bethpage, New York and was founded by Michael J. Cullen on August 4, 1930. It is notable for its title of "America's First Supermarket" as recognized by the Smithsonian Institution.
Michael J. Cullen, a then-Kroger employee who devised the concept of the modern supermarket. Cullen attempted to make his concept public when he wrote to Kroger president Bernard Kroger, proposing a new type of food store with a focus on low prices, cash sales, and without delivery service, in larger stores (at low rents) with ample parking.