Katherine L. Ogilvie Musgrave (February 8, 1920 – June 20, 2015) was an American academic, registered dietitian, and nutritional consultant. She taught food science and nutrition at the University of Maine from 1969 to 1986, and after her official retirement continued teaching for close to three decades on the university's online continuing education website, educating thousands of students. During this time she also worked as a dietitian for three Bangor physicians, conducted nutrition workshops and corporate wellness programs across the state, and appeared on a weekly radio show speaking about healthy living.