McDonaldland is a McDonald's media franchise and the fictional fantasy world inhabited by Ronald McDonald and his friends. Starting with the creation of Ronald McDonald in 1963, it is primarily developed and published by McDonald's. Initial attempts to expand the McDonaldland universe by marketing agency Needham, Harper & Steers were seemingly retconned due to legal issues, but ongoing aspects were expanded in McDonald's projects in collaboration with Data East, Virgin Interactive, Treasure, SEGA, and Klasky Csupo.

Ronald McDonald is a clown character used as the primary mascot of the McDonald's fast-food restaurant chain. He inhabits the fictional world of McDonaldland, with his friends Mayor McCheese, the Hamburglar, Grimace, Birdie the Early Bird and The Fry Kids.