Which fast food chain uses the slogan 'I'm Lovin' It'?

The fast-food chain that uses the slogan “I'm Lovin' It” is McDonald's.

The branding campaign began in 2003 and became McDonald's first global advertising campaign. It was unveiled in Chicago on June 12, 2003, launched first in Munich under the German phrase “Ich liebe es,” and reached the United States later that year. The campaign marked a major image shift after McDonald's reported its first annual loss in 2002.

The slogan is closely associated with a five-note jingle often rendered as “ba da ba ba ba.” Music for the campaign was created by Tom Batoy and Franco Tortora, while Justin Timberlake provided vocals for the song connected with the launch. The phrase has been translated or adapted for use in at least 11 other languages.

It is easy to confuse the slogan with one of McDonald's older advertising lines, such as “You deserve a break today.” Those campaigns belong to earlier eras; “I'm Lovin' It” has been the company's defining global slogan since 2003.