Big Tobacco is a pejorative term often applied to the tobacco industry in general, or more particularly to the "big three" tobacco corporations in the United States: Philip Morris (Altria), Reynolds American (RJR) and Lorillard[1]. The phrase is often used in TheTruth.com, the Campaign for Tobacco-Free Kids, and other anti-smoking ad campaigns funded by the Tobacco Master Settlement Agreement.
Lisa Nainggolan. Battling Big Tobacco: Physician activism vital on smoking's new frontiers. http://www.theheart.org/article/1318775.do Heartwire; Nov 28, 2011.