Brown & Williamson Tobacco Corporation was a U.S. tobacco company and a subsidiary of multinational British American Tobacco that produced several popular cigarette brands. It became infamous as the focus of investigations for chemically enhancing the addictiveness of cigarettes. Its former vice-president of research and development, Jeffrey Wigand, was the whistleblower in an investigation conducted by CBS news program 60 Minutes, an event that was dramatized in the film The Insider (1999). Wigand claimed that B&W had introduced chemicals such as ammonia into cigarettes to increase nicotine delivery and increase addictiveness.

Jeffrey Stephen Wigand is an American biochemist and whistleblower.