McDonald's launched the “I'm lovin' it” slogan and campaign phrase in 2003.
The campaign was introduced as a global marketing platform and became one of McDonald's most enduring modern brand lines. Its wording used a casual first-person expression rather than a traditional product claim, helping the company connect the restaurant experience with enjoyment and everyday lifestyle.
The launch was associated with advertising and music, including a campaign jingle performed by Justin Timberlake. The phrase was adapted for use across multiple markets and languages while retaining its recognizable English wording in many international promotions.
A frequent mix-up is the claim that “I'm lovin' it” began in the 1990s. McDonald's used many earlier slogans, including “You Deserve a Break Today,” but the “I'm lovin' it” platform dates from 2003 and replaced earlier major campaign language.