| Code | | Site | | Code | | Site | | Code | | Site |
| BAG | | Durham Duplicate Bridge Club | |
BAX | | Ajax Bridge Club | |
BBV | | Belleville DBC | |
| BC4 | | Collingwood Sectional | |
BC6 | | Cobourg Sectional | |
BCB | | Cobourg DBC | |
| BDL | | Dream Land Bridge Club | |
BHE | | Huntsville DBC | |
BLS | | Lindsay DBC | |
| BM4 | | Markham Sectional | |
BM6 | | Midland Sectional | |
BMH | | ??? | |
| BML | | Midland Bridge Club | |
BMT | | Blue Mountain Duplicate Bridge | |
BNM | | Newmkt Non Smoking DBC | |
| BO5 | | Oshawa Sectional | |
BP5 | | Peterborough Sectional | |
BPB | | Peterborough Bridge Club Inc | |
| BT4 | | Trenton Sectional | |
BT8 | | Thornhill Sectional | |
BTL | | Toronto Ladies Golf Club DBC | |
| BTY | | Toronto Youth Bridge | |
BWH | | Washago Bridge Club | |