Which singer was featured in the vocal version of McDonald's “I'm Lovin' It” jingle?

Justin Timberlake was featured in the vocal version of McDonald's “I'm Lovin' It” jingle.

McDonald's launched the “I'm Lovin' It” campaign in 2003 with a musical identity intended to work across international advertising. Timberlake recorded vocals for the version used in the campaign, giving the slogan a strong connection to contemporary pop music and helping the brand reach younger audiences.

The campaign's musical material had several creative contributors, and the jingle's history is sometimes simplified into a single-person origin story. The important branding distinction is that Timberlake was the prominent singer associated with the vocal recording, while other contributors were involved in writing, production, or development.

This association does not mean that Timberlake was the sole creator of the campaign or that every McDonald's advertisement used an identical recording. Local markets adapted the campaign, but the phrase and recognizable musical hook remained its central global identifiers.