Joanne Gardner is a fictional character from the long-running soap opera Search for Tomorrow. For 35 years, the role was played by actress Mary Stuart. She was referenced by many characters and by soap periodicals as simply Jo, especially in later years when it became difficult to assign her a definite last name. Joanne was married four times, making her full legal name Joanne Gardner Barron Tate Vincente Tourneur. She was to marry Sam Reynolds in 1970, but he died while on business in Africa, leaving Joanne heartbroken.