The 2019 Women's Cricket Super League, or 2019 Kia Super League for sponsorship reasons, was the fourth and final season of the Women's Cricket Super League (WCSL), the semi-professional women's cricket competition in England and Wales. The competition, run by the England and Wales Cricket Board (ECB), consisted of six franchise teams playing in a Twenty20 format. The tournament was scheduled to be replaced by the Women's Hundred and a new regional domestic structure from the next season, although the full implementation of this was delayed due to the COVID-19 pandemic. Surrey Stars were the defending champions. Western Storm defeated Southern Vipers by 6 wickets to win the 2019 title.