McDonald’s introduced “I’m Lovin’ It” as a global advertising slogan in 2003.
The phrase was part of a worldwide campaign designed to give McDonald’s a more contemporary and consistent voice across markets. It was paired with the “ba da ba ba ba” musical signature, which became closely associated with the campaign and the company’s advertising.
The slogan followed several earlier McDonald’s campaigns, including “You Deserve a Break Today,” which had been used decades earlier. “I’m Lovin’ It” was notable for its global reach and continued use across television, digital media, packaging, and in-store communications.
People sometimes attribute the campaign entirely to a celebrity performer because Justin Timberlake appeared in an early promotional music video. However, the phrase itself became a McDonald’s corporate tagline rather than the title of a single artist’s campaign.