Burger King (BK) is an American multinational chain of hamburger fast food restaurants. Headquartered in the unincorporated area of Miami-Dade County, Florida, the company was founded in 1953 as Insta-Burger King, a Jacksonville, Florida\u2013based restaurant chain. After Insta-Burger King ran into financial difficulties in 1954, its two Miami-based franchisees David Edgerton and James McLamore purchased the company and renamed it \