* 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

* Ottawa District 1

* Ottawa Masonic Portal

* Eastern District

* St. Lawrence District

* Ontario Mason e-zine on-line

* Valentine's Charity Ball

* 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 

Here's a great reference site for all things Masonic
A member asked for a reference to a Masonic radio service that might be found on the Internet. He turned up a terrific links page maintained by the Widow's Sons' Masonic Lodge No. 60 of Charlottesville, Virgina. You'll find the audio links in the right hand column...