Cycle Ontario Alliance
- Promotes cycling for recreation and transportation purposes in Ontario, as well as cycling education.
- http://www.cycleontario.ca/

Toronto Bicycling Network
- This volunteer operated, not-for-profit cycling club organizes over 200 recreational cycling events every year. Located in Toronto.
- http://www.tbn.ca/

Ganaraska Freewheelers
- Organization founded to promote safe, non-competitive cycling in Port Hope and the surrounding area.
- http://www.hedney.com/freewheelers/index.htm

Mississauga Bicycle Club
- Organizes regular group rides, learn to race clinics and other bicycling related activities. Includes photographs, upcoming events and membership information.
- http://mbrc.dyndns.org:64314/

Great Canadian Bicycle Tours
- A non-profit organisation that organizes weekend rides throughout the season, at various locations in southern Ontario. Rides are supported with maps, tour leaders and lunch rests.
- http://sports.groups.yahoo.com/group/greatcanadian/

Thunder Bay Cycling Club
- Offers information and news on its recreational and racing season, events and activities, including a newsletter, photo gallery and contacts.
- http://www.tbaycc.ca/

The Brampton Cycling Club
- For Brampton, Mississauga and surrounding region. Offers touring, racing and mountain biking, as well as programs in bike maintenance and safety.
- http://www.bramptoncyclingclub.com/

Oshawa Cycling Club
- Recreational touring throughout Durham Region. The club caters to a wide range of age and experience levels with regularly scheduled rides on weekdays and weekends. Time trials and century ride information featured.
- http://oshawacyclingclub.org/

Newmarket Eagles Cycling Club
- Organises training and touring rides, time trials and road races in the area north of Toronto.
- http://www.newmarketeagles.com/

North Bay Cycle Club
- Based in North Bay; offering riding and events calendar and image gallery from this road and mountain bike club.
- http://northbaycycling.ca/

Fly Gurlz
- A mountain biking club for Ontario women, offering periodic outings including a camp in the Collingwood area.
- http://www.flygurlz.com/

Oakville Cycling Club
- Organises time trialing, road racing, touring and mountain biking, club rides, races, tours and social events for all levels of cyclist.
- http://www.oakvillecc.com

Kanata-Nepean Bicycle Club
- Social, recreational bicycle touring.
- http://www.globisdata.ca/knbc/index.html

Ottawa Bicycle Club
- Long-time group offering riding clinics, training and riding; features include riding calendar, cue sheets and membership information.
- http://www.ottawabicycleclub.ca/

Community Bicycle Network (Toronto)
- CBN is a community-based bicycle organization with the goal of promoting and stimulating healthy, active, and neighbourhood-friendly sustainable transportation initiatives within the City of Toronto.
- http://www.communitybicyclenetwork.org/

Brockville Cycling Club
- This group cycles throughout Leeds and Grenville Counties in Eastern Ontario. Racing, touring, and mountain biking.
- http://www.brockvillecycling.com/

Three Sixty Bicycling Promotions
- A company that is based on a zero balanced budget, all revenue generated will be reinvested to continue promoting cycling in bigger and better ways. Features events, repair courses, advocacy, training, and resources.
- http://www.three-sixty.ca/

St. Catharines Cycling Club
- Racing club with membership details, pictures, news items, members listing and a message forum.
- http://www.stcatharinescc.com/

Citizens for Safe Cycling
- A voluntary association of cyclists who work for better, safer, environmentally-friendly cycling in Ottawa-Carleton.
- http://www.cfsc.ottawa.on.ca/

Ontario Cycling Association
- Provides information about cycling in Ontario, including safety, advocacy, competition, clubs and tours. Includes links, and membership and reference information.
- http://www.ontariocycling.org/

Black Sheep Mountain Bike Club
- Northwestern Ontario's newest and largest mountain bike club.
- http://www.blacksheepmtb.com/

Belleville Bicycle Touring Club
- Offering weekly and weekend recreational rides, not racing.
- http://www.quinte.net/sports/bicycle.html

Almonte Bicycle Club
- Club serving Lanark County, upper Ottawa Valley. Touring and racing.
- http://www.magma.ca/~abc/

Human Powered Vehicles of Southern Ontario
- Membership organization of human-powered vehicle enthusiasts. Site provides photos, articles, record attempts and general information.
- http://www.hpv.on.ca/