2017–18 Sydney Sixers WBBL season

Sydney Sixers
2017–18 season
CoachBen Sawyer
Captain(s)Ellyse Perry
Home groundSydney Cricket Ground
LeagueWBBL
Record10–4 (1st)
FinalsChampions
Leading Run ScorerEllyse Perry – 552
Leading Wicket TakerSarah Aley – 23
Player of the SeasonEllyse Perry

The 2017–18 Sydney Sixers Women's season was the third in the team's history. Coached by Ben Sawyer and captained by Ellyse Perry, the Sixers entered WBBL|03 as the defending champions. They finished the regular season on top of the points table for the second season in a row and proceeded to reach a third-consecutive championship decider.

In the final, the Sixers claimed back-to-back titles with a comfortable nine-wicket defeat of the Perth Scorchers at Adelaide Oval, during which Sarah Coyte punctuated an emphatic return to top-level domestic cricket by claiming figures of 4/17 and earning Player of the Match honours.