O'connor Focus Community Against Substance Abuse

O'connor Irish Heritage House

Oakdale Congregation Of Jehovah's Witnesses, Toronto, Ontario

Oakwood Wesleyan Church

Ober Family Foundation

Ogaden Somali Community Association Of Ontario

Ohalei Yoseph Yitzchak

Ohr Lagolah Charitable Trust

On Guard for Humanity

Ontario Archaeological Society

Ontario Association For Skiers With Disabilities

Ontario Association Of Architects Trust Fund

Ontario Association Of The Deaf

Ontario Camp Of The Deaf

Ontario Colleges Athletic Association

Ontario Community Support Association / Association...

Ontario Construction Education And Research Foundation

Ontario Deaf Sports Association

Ontario Federation For The Cerebral Palsied

Ontario Federation Of School Athletic Associations