| 221 | | NAUTIC | Shipbuilding and Ship repair-Ship Equipment and Components,Shipbuilding and Ship repair-Engineering Bureau | Iceland | D2 |
| 222 | | Nautic Rus | Shipbuilding and Ship repair-Engineering Bureau | Russia | B6 |
| 223 | | NAVADA | Special Equipment-Processing Equipment | Russia | D7 |
| 224 | | NBAMR | Catching and Processing-Catching,Catching and Processing-Processing | Russia | G6 |
| 225 |  | NC Bay | Catching and Processing-Catching | Russia | J6 |
| 226 | | Neptun | Product Distribution-Traiding,Special Equipment-Refrigeration and Freezing,Services-Logistics | Russia | H15 |
| 227 | | Nerey | Product Distribution-Traiding | Russia | |
| 228 | | New Biotechnologies | Aquaculture-Feeds and Additives,Special Equipment-Processing Equipment,Other-Scientific Research Institutions | Russia | C18-1 |
| 229 | | NICHIMO CO | Special Equipment-Fishing Gear | Japan | D18 |
| 230 | | Nikulov A.V. | Aquaculture-Farming | Russia | D36 |
| 231 | | NORDKAPP MARIСULTURE | Aquaculture-Farming | Russia | H20 |
| 232 | | Nordweller RUS | Shipbuilding and Ship repair-Ship Repair,Shipbuilding and Ship repair-Ship Systems,Shipbuilding and Ship repair-Ship Equipment and Components | Russia | A6 |
| 233 | | NOREBO | Catching and Processing-Catching,Catching and Processing-Processing | Russia | F1 |
| 234 | | NORTH KURIL BASE OF SEINER FLEET (NKB SF), SC | Catching and Processing-Catching,Catching and Processing-Processing | Russia | G13 |
| 235 | | Novaya Volna, PK | Catching and Processing-Catching,Catching and Processing-Processing | Russia | J6 |
| 236 | | Odisseya | Product Distribution-Traiding | Russia | J8 |
| 237 | | OKEANRYBFLOT | Catching and Processing-Catching,Catching and Processing-Processing | Russia | |
| 238 | | Okskaya Shipyard | Shipbuilding and Ship repair-Shipyard | Russia | A8 |
| 239 | | Omsktransmash (Uralvagonzavod Concern) | Services-Logistics | Russia | C3 |
| 240 | | Optimar AS | Special Equipment-Processing Equipment | Norway | E4 |
