Art Widner (sometime written as R Twidner, born 1918) is a science fiction fan and zine publisher.
Art Widner is recognized for organizing the first SF fanclub in Boston, called "The Stranger", in 1940. Art's first zine, FanFare was the zine responsible for the formation of the National Fantasy Fan Federation. His current FAPA zine YHOS is one of the longest running zines still being published. He is well known for stopping publishing YHOS for more than thirty years before returning and becoming an important part of fanzine fandom again in the 1980s.
Art Widner currently lives in Gualala, California.