The defending champion Rachel Homan rink from Ottawa will be representing Canada at the 2018 Winter Olympics, and thus will not have the opportunity to defend their provincial crown. Had they not qualified for the Olympics, they still would not have had a chance to defend their title, as they would be representing Team Canada at the 2018 Scotties Tournament of Hearts.
The event will be have a triple knock out format, rather than the traditional round robin event as done in previous years. The number of qualified teams increased from 8 to 12.
12 teams will qualify from two regional qualifiers (three each), a challenge round (three teams), the winner of the Trophy competition, plus the top two southern Ontario teams in the CTRS standings (as of November 12).
The team lineups are as follows:
The draw is listed as follows: