Robert James Havighurst (June 5, 1900 in De Pere, Wisconsin – January 31, 1991 in Richmond, Indiana) was a professor, physicist, educator, and aging expert. Both his father, Freeman Alfred Havighurst, and mother, Winifred Weter Havighurst, had been educators at Lawrence University. Havighurst worked and published well into his 80s. According to his family, Havighurst died of Alzheimer's disease at the age of 90.[1]