Which singer performed the vocal version of McDonald’s “I’m Lovin’ It” campaign song?

Justin Timberlake performed the vocal version used in McDonald’s “I’m Lovin’ It” campaign.

The campaign launched internationally in 2003 and paired a short, memorable phrase with a musical hook. Timberlake’s vocal performance helped connect the advertising theme with contemporary pop music and gave the campaign a recognizable sound beyond the restaurant’s visual branding.

The song and slogan are related but not identical. “I’m Lovin’ It” is the advertising tagline, while the recording was a musical component of the campaign. The phrase was also adapted across markets and used in commercials with different local production details.

The campaign is frequently discussed alongside producer and songwriter work connected with the recording. For a trivia question about the vocalist heard on the campaign song, however, the canonical answer is Justin Timberlake.