Mac Tonight is McDonald's moon-faced mascot from the 1980s.
Mac Tonight appeared in a McDonald's advertising campaign that began in 1986. The character wore sunglasses and had a crescent-moon head, while the commercials used a distinctive version of the song “Mack the Knife” to promote evening dining.
The campaign gave McDonald's a nighttime identity rather than focusing only on daytime meals. Mac Tonight is separate from the McDonaldland characters, although both belong to the broader history of McDonald's character-based branding.
The mascot's name and appearance are sometimes confused with restaurant mascots such as Grimace or Mayor McCheese. Mac Tonight was a campaign-specific figure tied especially to 1980s advertising and the message that McDonald's could be a destination after dark.