Regina "Regi" E. Herzlinger (born c.1944) is an American businessperson and academic. She is the Nancy R. McPherson Professor of Business Administration at Harvard Business School (HBS) where she teaches on the Master of Business Administration programme. Herzlinger was the first woman to obtain tenure or become a chair at HBS. She has also been the first woman on several company boards. Her approach has been described as fiscally conservative.