* Grand Lodge of Canada in the Province of Ontario
* Lodges in Ottawa District 2:
> Ashlar Lodge 564
> Bytown Lodge 721
> Defenders Lodge 590
> The Builders Lodge 177
* Ontario Mason e-zine on-line
* Masonic Foundation of Ontario
* MasoniChip Ontario -- Child Identification Program
* The Order of DeMolay -- a fraternal organization for young men, 12 - 21 years
* International Order of Rainbow for Girls
* Sovereign Great Priory of Canada (Masonic Knights Templar)
* Ancient and Accepted Scottish Rite of Freemasonry of Canada
* Grand Chapter of Royal Arch Masons of Canada in the Province of Ontario
> Royal Arch District 12
> Royal Arch District 13
>>> Carleton Chapter No. 16
>>> Kitchener Chapter No. 210
>>> Ottawa Chapter No. 222