What phrase became McDonald’s global advertising campaign line in 2003?

“I’m Lovin’ It” became McDonald’s global advertising campaign line in 2003. The phrase was paired with a distinctive five-note musical motif and used across markets around the world.

McDonald’s introduced the campaign in Munich, Germany, on September 2, 2003. The rollout marked a shift toward one central global brand message, although local advertisements could still adapt the words, music, and visuals for different countries. The campaign’s informal language was designed to sound conversational and emotionally positive.

The slogan is often associated with Justin Timberlake because he appeared in an early music video connected with the campaign. However, the campaign was a McDonald’s brand platform, not simply a Timberlake release. It also should not be confused with the older slogan “You Deserve a Break Today,” which belonged to the 1970s.