Which singer provided vocals for McDonald's 2003 “I'm Lovin' It” campaign recording?

Justin Timberlake provided vocals for the recording used in McDonald's 2003 “I'm Lovin' It” campaign.

McDonald's launched “I'm Lovin' It” internationally in 2003 as a major global advertising platform. The campaign used a pop-oriented jingle and a recording associated with Timberlake, helping connect the restaurant brand with contemporary music and youth culture.

The phrase itself became McDonald's best-known long-running advertising slogan. The campaign’s musical identity sometimes leads people to describe Timberlake as the sole creator of the slogan, but the advertising concept, music production, and vocal performance involved multiple contributors.

Another common mix-up is confusing the campaign recording with a conventional Timberlake single. It was created for McDonald's advertising, even though Timberlake’s celebrity presence made the association especially prominent.