Which singer is credited with recording the vocal for McDonald's “I'm Lovin' It” campaign?

Justin Timberlake recorded the vocal used in McDonald's “I'm Lovin' It” campaign.

The campaign launched in 2003 and used a pop-oriented sound to make the brand feel contemporary and globally connected. Timberlake's vocal performance helped turn the advertising line into something that resembled a commercial pop refrain rather than a conventional spoken slogan.

The campaign's musical material had several contributors, which creates frequent confusion about credit. The five-note signature is associated with the campaign's broader production history, while Timberlake is specifically linked to the vocal recording used in the advertising rollout.

The campaign was not simply a song release branded by McDonald's. It was a coordinated identity system combining words, music, visual design, and international media. That combination helped “I'm Lovin' It” become one of the company's most durable modern branding assets.