Shorin-Ryu Karate Academy
- Family martial arts academy offers classes for adults and children.
- http://mysite.verizon.net/shorinryuwaltham/

Waltham Recreation Department
- Provides information about recreation areas, facilities and community programs. Includes contact information.
- http://www.city.waltham.ma.us/parks/

Waltham Youth Basketball Association
- Includes schedules, standings, results and contact information.
- http://www.leaguelineup.com/welcome.asp?url=walthamyba

Bernal's Gator Swim Club
- Competitive swim team offers swimmers and their families an opportunity to achieve their highest goals. Swimmers range in age from under ten to former Olympians.
- http://www.bernalgators.com/

Waltham Track Club
- Offers instruction and competition in track and field, cross-country, road racing and marathoning. Includes information about club history, current programs, fund raising, awards, staff, events calendar and contact information.
- http://host24.hrwebservices.net/~watchci/WalTrack/

Waltham Table Tennis Club
- Non-profit club. Includes tournament and contact information and club rules. Also includes meeting and facility information.
- http://www.walthamttc.com/

Aspen Camp and Running Brook Day Camp
- Summer day camp for children entering kindergarten through sixth grade and adventure camp for ages 10-14. Includes program descriptions, registration information, and pictures.
- http://www.aspencamp.com/

Weston Racquet Club
- Offers indoor and outdoor lighted courts and offers swimming, whirlpool, aerobic, cardio, strength, exercise, and salons.
- http://www.westonracquetclub.com

Boston Fencing Club
- Directions, events, news clips, class descriptions, instructor profiles, and related links.
- http://www.bostonfencingclub.org/

Waltham Youth Hockey
- League dedicated to the promotion of youth hockey and the developing the skills of its players.
- http://www.walthamyouthhockey.org/