Jeffrey S. Wigand (; born 17 December 1942) is an American former vice president of research and development at Brown & Williamson in Louisville, Kentucky, who worked on the development of reduced-harm cigarettes. He currently lectures around the world as an expert witness and consultant for various tobacco issues, and devotes time to his non-profit organization Smoke-Free Kids Inc, an organization that attempts to help children of all ages make better decisions and healthy choices regarding tobacco use.