Which song title became McDonald’s global advertising slogan in 2003?

“I’m Lovin’ It” became McDonald’s global advertising slogan in 2003.

The campaign was created to give McDonald’s a more unified international voice. Its short, conversational wording was designed to work across markets while preserving the brand’s upbeat and youthful tone. The slogan was paired with a distinctive musical hook that made it recognizable in television, radio, and later digital advertising.

Justin Timberlake recorded a version of the campaign song, helping bring additional pop-music attention to the launch. The campaign is often associated with him, although the slogan itself is a McDonald’s advertising property rather than simply a song title released by Timberlake.

“I’m Lovin’ It” followed earlier major slogans such as “You Deserve a Break Today” and “We Love to See You Smile.” Its long use made it one of the most durable phrases in modern fast-food branding.