| 1 | NQ | Air Japan Company Ltd. | ICAO: AJX, Callsign: Air Japan, Name changed from World Air Network Co., Ltd. ICAO designator changed from WAC. ICAO callsign changed from Wing Ace | J | AVCODES |
| 2 | NQ | New Zealand Ministry of Transport | Callsign: Civair, | NZ | AVCODES |
| 3 | NQ | NW Territoral Airways | ICAO: NWT, Bought and merged into First Air during 1997. | CDN | AVCODES |
| 4 | NQBC | NINE ZERO FOUR EIGHT-ZERO EIGHT FOU | | | SCAC4 |
| 5 | NQCD | NORQUAY COLONY LTD | | | SCAC4 |
| 6 | NQCN | NINE ONE ZERO TWO-FOUR NINE SIX EIG | | | SCAC4 |
| 7 | NQEF | N E F | | | SCAC4 |
| 8 | NQIC | NINE ONE SIX ZERO-THREE SEVEN FOUR | | | SCAC4 |
| 9 | NQMC | NIKI MARINE COMPANY INC PIRAEUS GR | | | SCAC3 |
| 10 | NQN | Transportes Aereos Neuquen Sociedad Anonima | IATA: T8, Callsign: Taneu, Ceased operations. Name changed from Transportes Aereos Neuquen Sociedad del Estado | RA | AVCODES |
| 11 | NQN | Transportes Aereos Neuquen Sociedad del Estado | IATA: T8, Callsign: Taneu, Name changed to Transportes Aereos Neuquen Sociedad Anonima | RA | AVCODES |
| 12 | NQN | Grupo LASA S.r.l. | Callsign: Lasa, | RA | AVCODES |
| 13 | NQOR | NOR TRANSPORTATION SERVICE INC | | | SCAC4 |
| 14 | NQPS | NORTHWEST PETROLEUM SERVICES | | | SCAC4 |
| 15 | NQSC | NARCISSUS SHIPPING CORPORATION | | | SCAC3 |
| 16 | NQSH | NETWORK SHIPPING LTD (A LIBERIAN COMPANY) | | | SCAC3 |
| 17 | NQSH | NETWORK SHIPPING LTD (A LIBERIAN CO | | | SCAC4 |
| 18 | NQTI | NTI | | | SCAC4 |
| 19 | NQTL | NORTHERN QUEBECK TRANSPORT LTD | | | SCAC3 |
| 20 | NQTS | NTS LLC | | | SCAC4 |
| 21 | NQWD | NEWTRADE CORP ATHENS GREECE | | | SCAC3 |
| 22 | NQWT | NEW WORLD TRADE TRANSPORTS INC | | | SCAC4 |
