Mac Tonight was the moon-faced singer used in McDonald's advertising from 1986.
The character promoted McDonald's evening business and was presented as a crooning performer with a crescent-moon head, dark sunglasses, and a tuxedo. His commercials used a rewritten version of “Mack the Knife,” giving the campaign a recognizable musical identity.
Mac Tonight represented a different branding strategy from McDonaldland's child-oriented characters. Instead of focusing on play and fantasy, the campaign targeted adults and emphasized nighttime dining. The character became especially associated with the late 1980s.
Mac Tonight is sometimes confused with McDonaldland figures such as Mayor McCheese or Captain Crook, but he belonged to a separate campaign centered on evening service. His name also plays on the sound of “Mack” in the song and the word “tonight,” directly linking the character to the advertising message.