McDonaldland was the name of McDonald's fictional advertising world featuring Ronald McDonald and his friends.
The company introduced McDonaldland in the early 1970s as a colorful fantasy setting for television commercials, restaurant promotions, packaging, and playground equipment. Ronald McDonald appeared there with characters including the Hamburglar, Grimace, Mayor McCheese, and Birdie.
The setting gave McDonald's a shared narrative universe rather than relying on separate advertisements. Each character represented a recognizable part of the brand or its menu, while the bright scenery and simple stories were designed to appeal to children.
McDonaldland is sometimes confused with a real theme park or a single television program. It was primarily an advertising setting, although restaurants and promotional materials physically incorporated its imagery. The campaign was especially prominent in the 1970s and 1980s.