Kurt Freund (17 January 1914 – 23 October 1996) was a Czech-Canadian physician and sexologist best known for developing phallometry (the objective measurement of sexual arousal in males), research studies in pedophilia, and for the "courtship disorder" hypothesis as a taxonomy of certain paraphilias (voyeurism, exhibitionism, toucherism, frotteurism, and what he called "preferential rape").