| Code | | Site | | Code | | Site | | Code | | Site |
| AA5 | | Arnprior Sectional | |
AAM | | Almonte DBC | |
AAP | | Arnprior Duplicate Club | |
| AAV | | Carlingwood DBC | |
AB6 | | Brockville Sectional | |
ABC | | The Bridge Connection | |
| ABR | | Brockville DBC | |
ACF | | Amanda's Bridge Club | |
ACO | | Cornwall Sr Citizens' BC | |
| ACW | | Alta Vista DBC | |
ADD | | Des Draveurs | |
ADP | | C De B Du Parc | |
| ADR | | Deep River DBC | |
AGU | | Club de bridge duplicata Louis | |
AK4 | | Kingston Sectional | |
| ANG | | North Grenville Duplicate Brid | |
ANT | | ??? | |
AO4 | | Ottawa Sectional | |
| AOV | | Prince of Wales DBC | |
AP4 | | Perth Sectional | |
APB | | Pembroke Duplicate | |
| APH | | Perth Dupl Bridge Club | |
APW | | Ottawa Valley Duplicate BC | |
ARA | | R A Duplicate Bridge Club | |
| ARF | | Renfrew Duplicate Bridge Club | |
AS7 | | Smiths Falls Sectional | |
ASF | | Smiths Falls DBC | |
| ASU | | Suzanne's Bridge Club | |
ASW | | The Seaway Bridge Club | |
ATI | | Thousand Islands DBC | |