What was the name of McDonald’s 1971 advertising world populated by characters?

McDonald’s called its 1971 character-based advertising world McDonaldland.

McDonaldland presented McDonald’s products and characters in a colorful fantasy setting. The campaign included figures such as the Hamburglar, Grimace, Mayor McCheese, and Captain Crook. It gave the company a shared fictional environment that could appear in television commercials, restaurant promotions, packaging, and toys.

McDonaldland was created for advertising rather than as a conventional television series. Its characters and designs changed over time, and some were later retired or used less often. The campaign also became the subject of a 1973 lawsuit by Sid and Marty Krofft, who argued that it resembled their H.R. Pufnstuf program; the courts ultimately found McDonald’s liable for copyright infringement. That legal history is distinct from the branding question: the name of the advertising world was McDonaldland.