McDonald’s introduced the “I’m Lovin’ It” global branding campaign in 2003.
The campaign marked a major effort to give McDonald’s a more unified international identity. Instead of relying only on product-specific advertising, the company used one central phrase, visual style, and musical signature across many markets.
The slogan is often associated with the “ba da ba ba ba” jingle. The campaign’s early music was connected with Justin Timberlake, although the advertising was a McDonald’s corporate campaign rather than a song released simply as a company jingle by him.
“I’m Lovin’ It” replaced several earlier slogans and became one of the longest-running major taglines in McDonald’s history. Its wording was designed to sound conversational and positive, making it adaptable across languages and advertising formats.