“I'm Lovin' It” was McDonald's first global advertising campaign, launched internationally in 2003.
The campaign gave McDonald's a single slogan and musical identity that could be used across many countries. Its short, conversational wording was designed to sound natural in different markets while supporting television, radio, print, and digital advertising.
The launch followed earlier campaigns that were strongly associated with particular periods or English-language markets, including “You Deserve a Break Today.” Those slogans belong to McDonald's advertising history, but they were not the company's first global campaign.
The campaign also became associated with a short musical hook and a recording featuring Justin Timberlake. The phrase remains one of McDonald's best-known modern brand lines, although local executions and translations have varied by market.