| 1 | NOA | Norontair | Callsign: Norontair, | CDN | AVCODES |
| 2 | NOA | Pantheon Airways S.A. d/b/a Olympic Air | IATA: OA, Callsign: Pantheon, IATA Prefix: 050, | GR | AVCODES |
| 3 | NOA | National Oceanic And Atmospheric Administration | Callsign: Noaa, ICAO designator changed from NAA | USA | AVCODES |
| 4 | NOA | Norontair | | | ICAO1 |
| 5 | NOAB | NORTHRIDGE TRANSPORT LTD | | | SCAC4 |
| 6 | NOAC | NORTH ATLANTIC ENTERPRISES | | | SCAC4 |
| 7 | NOAE | NOBLE, A E, INC | | | SCAC3 |
| 8 | NOAE | NORTHWEST MUSIC | | | SCAC4 |
| 9 | NOAH | NOAHS CART LLC | | | SCAC4 |
| 10 | NOAI | NORTH AMERICAN VAN LINES OF TEXAS I | | | SCAC3 |
| 11 | NOAI | NORTH AMERICAN VAN LINES OF TEXAS I | | | SCAC4 |
| 12 | NOAK | NORTH TO ALASKA INC | | | SCAC3 |
| 13 | NOAK | NORTHWEST RELEASING LTD | | | SCAC4 |
| 14 | NOAL | NINE ZERO FIVE EIGHT-SEVEN FIVE ONE | | | SCAC4 |
| 15 | NOAM | NORTH AMERICAN VAN LINES INC | | | SCAC3 |
| 16 | NOAO | NORTH AMERICAN TRANSPORTATION CORP | | | SCAC3 |
| 17 | NOAO | N W SHIPPERS INC | | | SCAC4 |
| 18 | NOAR | NORTHERN AIR CARGO INC | | | SCAC4 |
| 19 | NOAS | NINE ONE FIVE FOUR-EIGHT FOUR ZERO | | | SCAC4 |
| 20 | NOAT | NORTH ALABAMA TRANSPORTATION INC | | | SCAC3 |
| 21 | NOAU | NORWEGIAN DEFENCE MATERIAL AGENCY (NDMA) | | N | BIC |
| 22 | NOAU | HAERENS FORSYNINGSKOMMAND | | | SCAC4 |
| 23 | NOAW | NINE ONE SEVEN SIX-FOUR TWO TWO | | | SCAC4 |
| 24 | NOAY | NORTHERN ARTERY | | | SCAC3 |
