Mac Tonight was McDonald’s advertising character modeled on a moon-faced singer in the 1980s.
The character appeared in a campaign promoting McDonald’s evening business. Mac Tonight wore sunglasses and sang a version of “Mack the Knife,” using a stylized crescent-moon head as his defining visual feature. The ads gave McDonald’s a distinct nighttime identity at a time when the company was emphasizing late-evening visits.
Mac Tonight is often confused with McDonaldland characters such as Ronald McDonald or Mayor McCheese, but he belonged to a separate campaign concept. The character was also not the source of McDonald’s “I’m lovin’ it” slogan, which arrived in 2003. Mac Tonight became especially associated with the song and moon imagery, making him one of the more recognizable temporary advertising figures in McDonald’s history.