Which singer was prominently featured in the original 2003 McDonald's “I'm Lovin' It” campaign?

Justin Timberlake was prominently featured in the original 2003 McDonald’s “I’m Lovin’ It” campaign.

Timberlake appeared in advertising connected with the launch, helping give the new slogan a strong pop-culture presence. His involvement is one reason the campaign is often discussed alongside the music and celebrity marketing used to introduce the phrase.

A common mix-up is to credit every part of the campaign to the same person. The advertising featured Timberlake, while the musical hook has been associated with other contributors, including Pharrell Williams and the production team behind the campaign. Those roles are related but not identical.

The campaign was important because McDonald’s combined a concise slogan, a recognizable sound, and a high-profile entertainer. That combination helped the phrase travel across markets and remain connected with the company long after the first commercials aired.