James Donald "Jim" Weinrich (born 1950) is an American sex researcher and psychobiologist.
He has also won the SSSS Hugo Beigel Award for the best paper published in The Journal of Sex Research (co-authored with Richard Pillard).
[1] He was Robert Trivers' first graduate student, and his 1976 dissertation addressed social-class differences in heterosexual behaviors, and the evolutionary adaptiveness of same-sex attraction.
In 1987, he moved to the University of California, San Diego to work with Igor Grant researching effects of AIDS on the brain.
After working for several years as an independent Internet consultant and entrepreneur, Weinrich returned to teaching in 2006, and he returned to school to earn a master's degree in psychology from San Diego State University.