Donaldson Run Recreation Association
- Donaldson Run Recreation Association (DRRA) is a private owned and operated swimming facility in Arlington. Information available about swim team, membership, directions.
- http://www.drra.org/

Dominion Hills Pool
- The Dominion Hills Area Recreation Association is a privately owned and operated community pool located in Arlington. Information about swim, dive, membership.
- http://www.dominionhills.org/

WALKArlington
- Promotes walking and community involvement in Arlington. Site includes mailing list, walking guides, event listing, and information concerning the creation of walkable communities.
- http://www.walkarlington.com/

Arlington Sports
- Nonprofit group dedicated to the development and promotion of amateur and professional bike racing.
- http://www.arlingtonsports.org/

Arlington Youth Lacrosse Club
- Comprehensive site for parent sponsored and administered club, including information for alumni, camps-clinic, clothing catalog, club policies, commissioners-coaches, equipment-uniforms, forms, fund-raising, maps-locations, on-line registration, league by
- http://www.aylc.org/

Arlington Babe Ruth
- Baseball club with four different leagues and seven levels of play for children 5-12. Sites provides calendar, standings, team and division listing, and news, as well as awards, links, and sponsor information.
- http://eteamz.active.com/Arlingtonbaberuth/index.cfm?

Arlington Girls Softball Association
- Provides the opportunity for girls age 6 to 18 to play both recreational and competitive FAST PITCH softball as a means to foster a sense of community. Teams, standings and registration.
- http://eteamz.active.com/AGSA/index.cfm?

Arlington Forest Club
- This site contains information about Arlington Forest Club. It includes news and events as well as swim, dive, and tennis team pages.
- http://www.arlingtonforestclub.org

Arlington Little League
- Provides baseball experience for youngsters at many levels, where everyone plays in every game. Throughout the program, the base paths are set to 60 feet and at the higher levels, pitching is done from about 46 feet.
- http://www.arlingtonlittleleague.org

Arlington Soccer Association
- Runs soccer programs for youth players in Arlington and Falls Church. Details about clubs and teams, game schedules, fields, and coaches and referees.
- http://www.arlingtonsoccer.com/

Aikido of Northern Virginia
- Includes general information about the dojo, class schedule, directions, and a photo gallery of students and teachers in action.
- http://www.aikido-nova.org/

Arlington Aquatic Club
- A competitive swimming program for children ages 4-21 and a Masters program. Sponsored by Arlington County's Department of Parks, Recreation & Community.
- http://www.aacswims.org/