What is McDonald’s longest-running global advertising slogan, introduced in 2003?

“I’m Lovin’ It” is McDonald’s longest-running global advertising slogan, introduced in 2003.

The campaign was launched internationally in September 2003 and used the phrase in advertising, packaging, music, and other customer-facing brand materials. Its short wording was designed to work across languages and markets.

The associated jingle became strongly linked with McDonald’s. The campaign’s music is commonly associated with the “ba da ba ba ba” vocal hook, which helped make the slogan recognizable beyond the printed words.

McDonald’s had used many earlier slogans, including “You Deserve a Break Today” and “We Love to See You Smile.” “I’m Lovin’ It” stands out because it remained the company’s central global campaign line for decades.