| Code | | Site | | Code | | Site | | Code | | Site |
| BBG | | Beach Grove BC | |
BBO | | Brew's Bridge Club | |
BC8 | | Cambridge Sectional | |
| BC9 | | Chatham Sectional | |
BG4 | | Guelph Sectional | |
BG6 | | Goderich Sectional | |
| BKC | | Kincardine Duplicate BC | |
BKY | | Kincardine Friday Duplicate | |
BL4 | | London Sectional | |
| BLD | | London Bridge Centre Inc. | |
BMC | | Maple City Bridge Club | |
BMF | | Meaford Duplicate Bridge Club | |
| BO4 | | Owen Sound Sectional | |
BOK | | Dunes Duplicate | |
BOS | | Owen Sound DBC | |
| BP4 | | Port Franks Sectional | |
BP9 | | Point Edward Sectional | |
BPE | | Port Elgin | |
| BPQ | | Guelph Bridge Club Inc | |
BS4 | | St Thomas Sectional | |
BS6 | | Sarnia Sectional | |
| BS9 | | Stratford Sectional | |
BSC | | Simcoe Duplicate Bridge Club | |
BSP | | Sun Parlour Bridge | |
| BSS | | Saugeen Shores DBC | |
BST | | St Thomas DBC | |
BT7 | | Tillsonburg Sectional | |
| BW5 | | Windsor Sectional | |
BW6 | | Waterloo Sectional | |