Dean Harry Anthony "Bizz" Hart (January 3, 1954 – November 21, 1990) was a Canadian professional wrestler, referee, wrestling as well as music promoter and member of the Hart family who wrestled in Canadian regional promotions during the 1970s and 1980s, most notably in the Calgary-based Stampede Wrestling. He was the son of Stu and Helen Hart and the younger brother of Smith, Bruce, Keith and Wayne Hart, as well as older brother of Ellie, Georgia, Bret, Alison, Ross, Diana and Owen Hart.