Guy Baldwin (born 1946) is an American psychotherapist, author, activist, and educator specializing in issues of particular relevance to the BDSM and leather communities.

Based in Los Angeles, he maintains that inclusion of non-injurious elements of sadomasochism (bondage, flagellation, domination, submission and others) in a consenting sexuality does not itself indicate or confirm mental illness or psycho-sexual dysfunction.

It has been expanded and is now managed by the National Coalition for Sexual Freedom as the Kink And Poly Aware Professionals Directory.

[1][2][3] Baldwin has written three books, as well as numerous articles for such magazines as Drummer, Frontiers, Checkmate, International Leatherman, and The Leather Journal.

Baldwin is a prolific author of both fiction and non-fiction related to BDSM.