John Delos DeLamater (October 12, 1940 – December 13, 2017) was an American sociologist and sexologist who taught at the University of Wisconsin–Madison, where he was the Conway-Bascom Professor Emeritus in the Department of Sociology.

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He was born to Clarence Delos DeLamater and Ethel Anna Hunter, on October 12, 1940, in San Diego, California. DeLamater earned a doctorate in social psychology from the University of Michigan in 1969, and joined the faculty of the University of Wisconsin–Madison the same year.^[1] DeLamater was named a fellow of the Society for the Scientific Study of Sexuality, received the Alfred E. Kinsey award for sex research, and served as editor of the Journal of Sex Research.^{[citation needed]} He had three children.^{[citation needed]} He donated two PCC streetcars to the City of Kenosha, Wisconsin which operate on their trolley line and are dedicated to his memory.^[2][3]