What McDonald's slogan became the company's global tagline after launching in 2003?

“I’m Lovin’ It” became McDonald’s global tagline after launching in 2003.

The campaign was introduced internationally as an effort to give McDonald’s a more unified worldwide identity. Its short, conversational wording was designed to work across markets and to express enjoyment rather than describe a specific menu item.

The campaign is closely associated with a musical hook performed by Justin Timberlake, whose vocals appeared in the original advertising rollout. The phrase was also adapted into local-language versions in different countries while retaining the same central idea.

McDonald’s had used many earlier slogans, including “You Deserve a Break Today.” Those lines belong to particular eras, whereas “I’m Lovin’ It” became the company’s broad global platform and remained one of its most recognizable branding phrases.