Philip Morris USA is the American tobacco division of the American tobacco corporation Altria Group. It has been the leading cigarette manufacturer in the U.S. since the late 20th century. Its major brands include Marlboro, Virginia Slims, Benson & Hedges, Merit, and Parliament.

Altria Group, Inc. is an American corporation and one of the world's largest producers and marketers of tobacco, cigarettes, and related products. It operates worldwide and is headquartered in Henrico County, Virginia, just outside the city of Richmond.