Margaret Rosario is a health psychologist who studies the development of sexual identity and health disparities associated with sexual orientation. Rosario was President of the American Psychological Association (APA) Division 44, the Society for Psychology of Sexual Orientation and Gender Diversity, from 2017-2018. Rosario received the APA Division 44 Award for Distinguished Contributions to Ethnic Minority Issues in 2008 and the Award for Distinguished Scientific Contributions in 2012, as well as the Society for the Scientific Study of Sexuality Distinguished Scientific Achievement Award in 2021.