One Accord
One To One Literacy Society
One Way Adventure Foundation
Only Jesus Glory Centre
Ontrack Institute Of Christian Leadership (canada)
Open Arms Foursquare Church
Open Door Community Ministries
Open Door Drop-in For Single Mothers Society
Open Door Social Services Society
Open Learning Foundation
Open Museum Society
Opera Appassionata Society
Operation Rainbow Canada
Opportunities For The Disabled Foundation
Option Youth Society
Options For Sexual Health
Or Shalom - Jewish Spiritual Community Association
Order Of St John Palliative Care Foundation
Original Costume Museum Society
Orion Foundation