On July 15, 2021, the team announced that Laura Harvey would return as head coach after the Tokyo Olympics, where she was serving as an assistant coach for the United States women's national team.

[2] Harvey officially assumed head coaching duties on August 9, 2021.

Source: NWSLsoccer.com For incoming transfers, dates listed are when OL Reign officially signed the players to the roster.

Transactions where only the rights to the players are acquired (e.g., draft picks) are not listed.

For outgoing transfers, dates listed are when OL Reign officially removed the players from its roster, not when they signed with another team.