| 1 | NAI | North Adria Aviation | Callsign: North-Adria, | HR | AVCODES |
| 2 | NAI | NOVAIR LLC | IATA: NG, Callsign: Novair, Founded on 23 October 2020, as a subsidiary of Atlantis Armenian Airlines. | AM | AVCODES |
| 3 | NAI | North Adria Aviation | | | ICAO1 |
| 4 | NAIA | NAIAD MARITIME CO | | | SCAC4 |
| 5 | NAIB | NARLUP INC | | | SCAC4 |
| 6 | NAIC | NOR-AM ICE AND COLD LLC | | | SCAC4 |
| 7 | NAIE | N AND I EXPRESS, INC | | | SCAC3 |
| 8 | NAIG | NAVIGAZIONE ALTA ITALIA S P A | | | SCAC3 |
| 9 | NAIG | NAIGAI TRANS LINES LTD | | | SCAC4 |
| 10 | NAIL | NORTH AMERICAN INTERNATIONAL LOGIST | | | SCAC4 |
| 11 | NAIM | NATIONAL INTERMODAL TRANSPORTATION | | | SCAC3 |
| 12 | NAIO | NATIONS TRUCKING INC | | | SCAC3 |
| 13 | NAIQ | NDO AMERICA INC | | | SCAC4 |
| 14 | NAIS | NAISH, AL, MOVING AND STORAGE COMPA | | | SCAC3 |
| 15 | NAIS | NAISMITH, DAVID | | | SCAC4 |
| 16 | NAIU | SAGER ASSETS S.A. | | CH | BIC |
| 17 | NAIU | NIGERIA AMERICAN LINE LIMITED | | | SCAC3 |
| 18 | NAIU | LIN LINES INC PANAMA | | | SCAC4 |
| 19 | NAIX | North American Creameries, Inc. | 7/1932 | | NAKINA |
| 20 | NAIX | NORTH AMERICAN CREAMERIES, INC | | | PWRC |
