What was McDonald's 2003 global advertising slogan featuring the phrase “Lovin' It”?

“I'm Lovin' It” was McDonald's global advertising slogan introduced in 2003.

The campaign marked a major shift toward a single worldwide brand message. Rather than relying only on country-specific advertising, McDonald’s used the same central phrase and audio identity across many international markets.

The slogan was associated with a jingle and with advertising featuring the phrase “ba da ba ba ba.” Justin Timberlake appeared in an early campaign advertisement, while the campaign’s music and creative development involved several agencies and performers.

“I’m Lovin’ It” remains one of McDonald’s longest-running slogans. It is sometimes confused with earlier lines such as “You Deserve a Break Today” or “We Love to See You Smile,” but those belong to different advertising eras. The apostrophe in “Lovin’” is part of the official stylized phrase.