Curling Canada introduced a new 16-team format for both the Tournament of Hearts and Brier for 2018, under which all 14 member associations of Curling Canada were represented in the main field, rather than being limited by a pre-qualifying tournament. The teams were divided into two pools for round robin play, after which the top four teams from each advanced to the Championship Pool. Defending champion Rachel Homan declined to participate as Team Canada in order to prepare for the 2018 Winter Olympics; Michelle Englot's team, who finished as runner-up in the 2017 tournament, participated in her place,. The final spot in the tournament was filled by a wildcardplay-in game held on the Friday before the tournament. The rinks of Hollie Duncan, Émilia Gagné, and Casey Scheidegger made their Scotties debut; although members of Team Ontario had previous Tournament of Hearts experience, mostly as alternates. Scotties veteran skip Sherry Anderson led a team of Tournament of Hearts rookies. The teams are listed as follows:
;Notes
Team Canada alternate Briane Meilleur played lead during Draw 7
Geneva Chislett skipped during Nunavut's final game in the placement round
Kaitlyn Lawes was officially listed as Team Manitoba's alternate, but did not attend the event.
CTRS ranking
Wildcard game
A wildcard play-in game was played on January 26; it was contested between the top two teams on the CTRS standings who did not win their respective provincial championships, and was played between The Glencoe Club's Chelsea Carey rink from Calgary and the East St. Paul Curling Club's Kerri Einarson rink from the Winnipegexurb of East St. Paul. With Einarson's victory, Manitoba was represented by three different teams in the tournament. ;CTRS standings for wildcard game:
Each team that finished fifth through eight in their pool played the team that finished in the same position in the opposite pool for the purpose of determining final tournament ranking. For example, the winner of the game between fifth place teams was ranked ninth place overall, the loser of that game was ranked tenth place, and so on.
Seeding Games
All game times are listed in Pacific Standard Time.
All wins and losses earned in the round robin were carried forward into the Championship Pool. Wins in tiebreaker games were not carried forward. Final Championship Pool Standings
Championship Pool Results
All draw times are listed in Pacific Standard Time.
