The 2017–18 Women's Big Bash League season or WBBL|03 was the third season of the Women's Big Bash League (WBBL), the semi-professional women's Twenty20 domestic cricket competition in Australia. The tournament was scheduled from 9 December 2017 to 4 February 2018. Melbourne Renegades captain Amy Satterthwaite was named Player of the Tournament, although her team failed to qualify for the finals. Sixers captain Ellyse Perry was the leading run-scorer of the season, while the leading wicket-taker title was shared between the Sixers' Sarah Aley and the Scorchers' Katherine Brunt.