| Abbreviation | Definition |
|---|---|
| AVS | Address Verification Service |
| AW | Aruba |
| AZ | Azerbaijan |
| BA | Bosnia and Herzegovina |
| BB | Barbados |
| BBM | Bulk Business Mail |
| BC | Bar Code |
| BC | British Columbia |
| BCR | Bar Code Reader |
| BCS | Bar Code Sorter |
| BD | Bangladesh |
| BE | Belgium |
| BF | Burkina Faso |
| BG | Bulgaria |
| BH | Bahrain |
| BHPO | Beverly Hills Post Office |
| BI | Burundi |
| BJ | Benin |
| BLDG | Building |
| BM | Bermuda |