WSL (Washington State)

National adult slow-pitch softball organization running sanctioned tournaments and championships across the United States, focused on team-based competitive play.
Pride Sports Seattle

Am inclusive adult sports organization in the Seattle area focused on LGBTQ+ players and allies, offering year-round recreational leagues across multiple sports (kickball, dodgeball, cornhole, pickleball) with options for individuals or teams.
Cascade Flag Football Association

Inclusive LGBTQIA+ & ally adult flag-football league in Seattle; part of the national National Gay Flag Football League (NGFFL) network; focuses on creating a safe, fun space to play and socialise.
OutLoud Sports – Seattle

Welcoming, community-focused.
ECS Pub League

A recreation-focused adult soccer league in Seattle, run by a nonprofit club (ECS FC), offering beginner-friendly 8v8 sessions in a fun inclusive environment for adult players of all skill levels.
Parks Tacoma

A public agency offering year-round recreational sports and activities for youth and adults across Tacoma. It provides leagues, tournaments, and drop-in play in a wide range of sports through inclusive, community-centered programming.
Greater Seattle Soccer League

A community adult soccer league serving the greater Seattle area, offering seasonal leagues across multiple age and skill divisions with team registration and a free-agent program to place individual players on teams
YMCA of Pierce and Kitsap Counties

Recreational, inclusive environment focusing on health and community.
Pierce County Parks Adult Slowpitch Leagues

Well-organized county program; family-friendly atmosphere.
Small Goal Soccer

Soccer leagues in USA for men and co-ed teams, offering structured seasons and free-agent options for individuals.