| Code | | Site | | Code | | Site | | Code | | Site |
| BB4 | | Burlington Sectional | |
BB5 | | Brampton Sectional | |
BB6 | | Bradford Sectional | |
| BB7 | | Barrie Sectional | |
BBE | | Bronte BC | |
BBO | | Burl-Oak | |
| BBP | | Brampton Bridge Club | |
BBR | | Badminton and Racquet Club | |
BBT | | Brampton EB | |
| BC5 | | Caledon East Sectional | |
BC7 | | Sectional | |
BCD | | Cavendish DBC of Totonto | |
| BCR | | Club Rainbow | |
BCT | | Cavendish Monday | |
BDD | | Denise's Duplicate Bridge Club | |
| BEC | | Etobicoke Bridge Centre | |
BGG | | St George's Golf and BC | |
BH4 | | Hamilton Sectional | |
| BHC | | Highland Creek BC | |
BHH | | Hart House Bridge Club | |
BHL | | Halton Bridge Club | |
| BHN | | Hamilton Bridge Centre | |
BHT | | Mt Hamilton Bridge Club | |
BHU | | The Toronto Hunt Club | |
| BHV | | Hamilton Bridge Luver's Group | |
BHZ | | Hazel's Bridge Club | |
BLE | | Lee's Bridge Club | |
| BM5 | | Mississauga Sectional | |
BMO | | Mississauga-Oakville DBC | |
BN6 | | Niagara on the Lake Sectional | |
| BNG | | Bridge Centre of Niagara | |
BNL | | Niagara-On-The Lake DBC | |
BOV | | Oakville Bridge Club | |
| BP6 | | Parry Sound Sectional | |
BP8 | | Puslinch Sectional | |
BPN | | Partners Bridge Club | |
| BRG | | Rosedale Glen DBC | |
BS5 | | St Catharines Sectional | |
BSL | | Shoreline Bridge Club | |
| BT5 | | Toronto Sectional | |
BTC | | Toronto Cr Sk and Cu Club | |
BTI | | Trillium Bridge Association | |
| BTO | | Toronto Bridge Club | |
BTS | | Thistle Bridge Club | |