ON - Triplets Quads and Quints Association
- A non-profit Canadian organization based in Toronto that provides a network for parents of triplets, quadruplets and quintuplets to share information, experiences and advice.
- http://www.tqq.com

ON - Toronto Parents of Multiple Births Association
- TPOMBA provides support, resources and encouragement to all families of twins and multiples.
- http://www.tpomba.org/

ON - Multiple Birth Families Association of Ottawa
- One of the largest multiple births associations in the country, and the largest chapter member of Multiple Births Canada. The geographical regions served includes Eastern Ontario and Western Quebec.
- http://www.mbfa.ca