The 2018–19 FA WSL was the eighth edition of the FA Women's Super League (WSL) since it was formed in 2010. It was the first season after a rebranding of the four highest levels in English women's football. The previous FA WSL 2 became the Championship – eleven clubs competed in the 2018–19 FA Women's Championship.

The Women's Super League (WSL), known as the Barclays Women's Super League (BWSL) for sponsorship reasons, is the highest league of women's football in England. Established in 2010, it is run by the Football Association and features twelve fully professional teams.