Ontario Prader-Willi Syndrome Association (OPWSA)

POB 73514 Toronto, Ontario M6C 4A7




The Ontario Prader-Willi Syndrome Association is a non-profit charity founded by parents who wanted to support other families dealing with PWS.


Thirty years ago, 4 families in the southern Ontario area started meeting informally as a support and sharing group. We each had a family member with Prader Willi Syndrome


You can donate directly via our website or you can participate in events advertised here on Toronto Charities.


Events are published both on the OPWSA website and on Toronto Charities where possible. Please contact us directly for the fundraising ideas or any volunteering opportunities.


August 02, 2018

OPWSA Family Fun Day with the Jays Event

OPWSA has reserved two blocks of tickets for the Toronto Blue Jays game against the...

October 06, 2017

OPWSA Fall Family and Caregiver Conference 2017

The Ontario Prader-Willi Syndrome Association (OPWSA) invites you to come out for a great weekend...

October 06, 2017

Dance for Prader-Willi Syndrome

Get your dancing shoes on! The Ontario Prader-Willi Syndrome Association (OPWSA) invites you to participate...