The 2018 Seattle Reign FC season was the club's sixth season of play and their sixth season in the National Women's Soccer League, the top division of women's soccer in the United States. After finishing fifth in the league for two consecutive seasons, the Reign finished third to return to the playoffs, where they lost to Portland Thorns FC in the semi-final.

Vlatko Andonovski replaced Laura Harvey as head coach on November 7, 2017. Andonovski was previously the head coach of FC Kansas City.

This was ultimately the club's last season of their first stint in Seattle, as well as its last as Seattle Reign FC. During the 2018–19 offseason, the club's principal owners, Bill and Teresa Predmore, announced that the team would move to Tacoma, Washington for 2019 and beyond, rebranding as Reign FC. In addition, the team gained two new minority investors—the ownership group of the Tacoma Rainiers, a Triple-A Minor League Baseball team in the Pacific Coast League, and Adrian Hanauer, the principal owner of the region's Major League Soccer team, Seattle Sounders FC. Reign FC played in the Rainiers' home of Cheney Stadium. A new soccer stadium in Tacoma, already planned for the Sounders' USL Championship affiliate Tacoma Defiance, was expected to be built by 2021, with Reign FC to move in upon its completion. However, in December 2021, it was announced that the club would return to Seattle.

Last updated: February 19, 2018
Source: https://medium.com/@ReignFC/seattle-reign-fc-announce-preseason-roster-6ea67a686698

Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply. Players may hold more than one non-FIFA nationality.

  Win   Tie   Loss

All times are in PT unless otherwise noted.

Last updated: September 8, 2018.
Source: NWSLsoccer.com