Which singer performed the vocal on the 2003 McDonald’s “I’m Lovin’ It” single?

Justin Timberlake performed the vocal on the 2003 McDonald’s “I’m Lovin’ It” single.

McDonald’s introduced “I’m Lovin’ It” as a global marketing campaign in 2003. Timberlake recorded and released a related single, while the campaign used the phrase and its musical hook across television advertising and other promotional materials. The song helped connect McDonald’s branding with contemporary pop music and a younger international audience.

The campaign’s music was associated with producer and songwriter collaborations that included The Neptunes and Pusha T, which has led to confusion about who performed the vocal. Timberlake is the credited singer on the single, while several other artists were involved in the broader creation and production of the music.

“I’m Lovin’ It” became one of McDonald’s longest-running global brand phrases. The slogan and musical identity were introduced together, but the question concerns the performer of the commercial single rather than the campaign’s producers or advertising agency.