Diet Mountain Dew

Diet Mountain Dew is a sugar-free variant of the iconic citrus-flavored soft drink Mountain Dew. The original brand has its roots in the 1940s, when it was developed by Barney and Ally Hartman in Knoxville, Tennessee, originally as a whiskey mixer. The brand underwent several reformulations, notably by Bill Bridgforth and the Tip Corporation in Virginia, before being acquired by the Pepsi-Cola Company in 1964.

Diet Mountain Dew was officially introduced to the market in 1988 to cater to the growing demand for low-calorie alternatives. Today, it is manufactured in numerous bottling facilities across the globe, primarily in the United States and Canada, to serve various international markets. The brand remains a cornerstone of the PepsiCo portfolio, known for its high caffeine content and distinct neon-green marketing identity.

Ownership of the brand has remained stable under PepsiCo for over six decades. As of 2026, PepsiCo continues to be the ultimate owner, managing the brand's global distribution through its vast network of subsidiaries and partner bottlers.