| Abbreviation | Definition |
|---|---|
| NTDB | National Trade Data Bank |
| NTE | National Trade Estimate |
| NTE | New To Export |
| NTM | New To Market |
| NTO | National Tourism Organization |
| NTO | No Tax Offshore |
| NTR | Normal Trade Relations |
| NVOCC | Non-Vessel Operating Common Carrier |
| NWJ | Negotiating With the Japanese |
| O&M | Organização e Métodos |
| O&O | Offshoring And Outsourcing |
| O/A | Open Account |
| OAC | Office of Anti-boycott Compliance |
| OAPEC | Organization of Arab Petroleum Exporting Countries |
| OAS | Organization of American States |
| OASIS | Operational and Administrative System for Import Support |
| OATU | Organisation of African Trade Unions |
| OAU | Organization of African Unity |
| OBL | Ocean Bill of Lading |
| OBN | On board notations (for Insurance): |