What fast-food company uses the slogan "I'm Lovin' It"?

McDonald's uses the slogan "I'm Lovin' It." The phrase is the centerpiece of the fast-food company's long-running global advertising campaign and is often paired with its five-note "ba da ba ba ba" jingle.

McDonald's introduced the campaign in 2003 as its first worldwide advertising campaign. The concept was created by the German agency Heye & Partner, and the campaign was first launched in Munich before expanding internationally. The English-language version appeared in the United States later that year.

The campaign also became associated with a recording by Justin Timberlake, while the jingle's writing and production involved several contributors, including Pharrell Williams, Tom Batoy, Franco Tortora, and Andreas Forberger. The slogan has been translated or adapted for different markets.

People sometimes confuse the slogan with older McDonald's lines such as "You Deserve a Break Today" or "We Love to See You Smile." Those were earlier campaigns; "I'm Lovin' It" became the company's signature global slogan in the 2000s.