| 3601 | NLF | Westair Aviation, Inc. | Callsign: Northern Life, | CDN | AVCODES |
| 3602 | NLFE | NIELSENS FEED | | | SCAC3 |
| 3603 | NLFH | NEVER LATE FREIGHT | | | SCAC4 |
| 3604 | NLFI | NATIONAL FREIGHT INC (INTERMODAL DI | | | SCAC4 |
| 3605 | NLFL | NEW LINE FREIGHT LLC | | | SCAC4 |
| 3606 | NLFM | NICKEL LANE FARMS | | | SCAC4 |
| 3607 | NLFO | NATIONAL FUEL OIL INC | | | SCAC4 |
| 3608 | NLFR | NORTON, LINDA FREIGHT SERVICE INC | | | SCAC3 |
| 3609 | NLFS | NELSON FREIGHT SERVICE INC | | | SCAC3 |
| 3610 | NLFX | National Lead Co. | added 10/1963; 7/1965-10/1966; eliminated 1/1970 | | NAKINA |
| 3611 | NLFX | National Lead Co. | 7/65-10/66; eliminated 1/70 | | NRHS |
| 3612 | NLFX | NATIONAL LEAD CO. | | | PWRC |
| 3613 | NLFX | NATIONAL LEAD CO | | | SCAC3 |
| 3614 | NLG | Nel Cargo | Callsign: Nelcargo, | CI | AVCODES |
| 3615 | NLG | NEL Cargo | | | ICAO1 |
| 3616 | NLG | Kansas City Southern Ry. Co. | added 7/1994; 7/2000-7/2005 | | NAKINA |
| 3617 | NLG | MidLouisiana Rail Corp. | added 1/1988; 1/1994; eliminated 7/1994 | | NAKINA |
| 3618 | NLG | North Louisiana & Gulf R.R. Co. | 1/1975-1/1980; eliminated 1/1988 | | NAKINA |
| 3619 | NLG | North Louisiana & Gulf R.R. Co. | 1/75-1/80; eliminated 1/88 | | NRHS |
| 3620 | NLG | MidLouisiana Rail Corp. | added 1/88; 1/94; eliminated 7/94 | | NRHS |
| 3621 | NLG | Kansas City Southern Ry. Co. | added 7/94; 7/2000 | | NRHS |
| 3622 | NLG | KANSAS CITY SOUTHERN RAILWAY CO. [MIDLOUISIANA RAIL CORP.; NORTH LOUISIANA & GULF RR] | | | PWRC |
| 3623 | NLG | North Louisiana and Gulf Railroad (Kansas City Southern Railway) | | | RSRV |
| 3624 | NLG | North Louisiana & Gulf R.R. Co. | | USA | TRAFFIC |
| 3625 | NLGC | NATIONAL LOGISTICS GROUP INC | | | SCAC4 |
| 3626 | NLGL | NET LOGIS LLC | | | SCAC4 |
| 3627 | NLGN | NYJAM LOGISTICS INC | | | SCAC4 |
| 3628 | NLGQ | NEAL LOGISTICS LLC | | | SCAC4 |
| 3629 | NLGT | NORTHERN LIGHTS TRUCKING INC | | | SCAC4 |
| 3630 | NLH | Norwegian Long Haul AS | IATA: DU, Callsign: Norstar, Designator DU recalled by IATA. | N | AVCODES |
| 3631 | NLH | Norwegian Long Haul AS | Callsign: Norstar, Designator DU recalled by IATA. | N | AVCODES |
| 3632 | NLHT | NELSON HORSE TRANSPORTATION | | | SCAC3 |
| 3633 | NLHU | NEPTUNE PACIFIC LINE PTE LTD | | NZ | BIC |
| 3634 | NLHU | NORTH LINE INTERNATIONAL LIMITED | | | SCAC4 |
| 3635 | NLI | Northern Air Charter, Inc. | Callsign: North Link, | CDN | AVCODES |
| 3636 | NLI | N.L.INDUSTRIES | | | PWRC |
| 3637 | NLIA | NOTICE LOGISTICS INC | | | SCAC4 |
| 3638 | NLIG | NEWTERM LOGISTICS INC | | | SCAC4 |
| 3639 | NLIN | NEAL INC | | | SCAC4 |
| 3640 | NLIO | NAVINSA LINE | | | SCAC4 |
| 3641 | NLIQ | NOVIC LOGISTICS INC | | | SCAC4 |
| 3642 | NLIR | NORTON LILLY INTERNATIONAL | | | SCAC4 |
| 3643 | NLIS | NORTHERN LIGHTS SPECIALIZED | | | SCAC4 |
| 3644 | NLIT | NORTHWEST LOGISTICS INC | | | SCAC4 |
| 3645 | NLIX | NL Industries, Inc. | 1/1980; eliminated 5/1983; 1/1994 (not listed) | | NAKINA |
| 3646 | NLIX | NL Industries, Inc. | 1/80; eliminated 5/83; 1/94 | | NRHS |
| 3647 | NLIX | N.L.INDUSTRIES | | | PWRC |
| 3648 | NLIX | NL Industries | | | RSRV |
| 3649 | NLIZ | NATIONAL LIMESTONE | | | PWRC |
| 3650 | NLJN | NEAL, JOHN P | | | SCAC4 |
| 3651 | NLJP | NEELY, J P TRUCKING | | | SCAC3 |
| 3652 | NLJQ | NELSON, J W TRANSPORT INC | | | SCAC3 |
| 3653 | NLJR | NELSON, JERRY R LLC | | | SCAC4 |
| 3654 | NLK | Elbrus-Avia Air Enterprise | Callsign: Elavia, Ceased opertions. | RUS | AVCODES |
| 3655 | NLK | Elbrus-Avia Air Enterprise | | | ICAO1 |
| 3656 | NLKC | NATIONALEASE OFKANSAS CITY INC | | | SCAC3 |
| 3657 | NLKC | NATIONALEASE OFKANSAS CITY INC | | | SCAC4 |
| 3658 | NLKI | NEAL TRUCKING INC | | | SCAC4 |
| 3659 | NLKL | NLK LLC | | | SCAC4 |
| 3660 | NLKT | NEW LINK TRANSPORT LTD | | | SCAC4 |
| 3661 | NLKU | KSH GMBH | | D | BIC |
| 3662 | NLL | Northafrican Air Transport | Callsign: Northafrican Air, | LAR | AVCODES |
| 3663 | NLL | Northafrican Air Transport | | | ICAO1 |
| 3664 | NLLA | NINELLA CHARTERS & DRIVER SERVICE | | | SCAC4 |
| 3665 | NLLB | NOBLE LLC | | | SCAC4 |
| 3666 | NLLE | NET LOGISTICS LLC | | | SCAC4 |
| 3667 | NLLK | NAEDOK LLC | | | SCAC4 |
| 3668 | NLLL | NAUTILUS LIFELINE LTD | | | SCAC4 |
| 3669 | NLLM | NAVEGATE LOGISTICS LTD | | | SCAC4 |
| 3670 | NLLN | NORMAN LOGISTICS LLC | | | SCAC4 |
| 3671 | NLLO | NEW LONDON LIMOUSINE SERVICE INC | | | SCAC3 |
| 3672 | NLLP | NORTON LILLY LOGISTICS | | | SCAC4 |
| 3673 | NLLS | NELLIS AUTO WRECKING | | | SCAC3 |
| 3674 | NLLS | NORTHWIND LOGISTICS LLC | | | SCAC4 |
| 3675 | NLLT | NILE, LARRY TRUCKING | | | SCAC3 |
| 3676 | NLLU | NOBLE CONTAINER LEASING LIMITED | | HK | BIC |
| 3677 | NLLU | NIPPON LINER SYSTEMS | | | SCAC3 |
| 3678 | NLLU | NIPPON LINER SYSTEMS LTD | | | SCAC4 |
| 3679 | NLLV | NAVCO LOGISTICS LLC | | | SCAC4 |
| 3680 | NLLW | NORTHERN LOGISTICS LLC | | | SCAC4 |
| 3681 | NLLX | Northern Line Layers Inc. | 7/2000-7/2005 (not listed) | | NAKINA |
| 3682 | NLLX | Northern Line Layers Inc. | Jul-00 | | NRHS |
| 3683 | NLLX | NORTHERN LINE LAYERS INC. | | | PWRC |
| 3684 | NLLX | Northern Line Layers | | | RSRV |
| 3685 | NLLX | NORTHERN LINE LAYERS INC | | | SCAC4 |
| 3686 | NLM | NLM Cityhopper B.V. | IATA: HN, Callsign: City, Name changed to KLM Cityhopper B.V. | NL | AVCODES |
| 3687 | NLM | KLM Cityhopper B.V. | IATA: HN, Callsign: City, IATA designator changed to WA / ICAO desigantor changed to KLC. Name changed from NLM Cityhopper B.V. | NL | AVCODES |
| 3688 | NLM | N.L.M. Dutch Airlines Ltd. (Nederlandse Luchtvaart Maatschappij N.L.M. N.V.) | IATA: HN, Name changed to NLM Cityhopper B.V. | NL | AVCODES |
| 3689 | NLM | No Limits Air | | E | AVCODES |
| 3690 | NLMC | NATIONAL MOTORCOACH SYSTEMS INC | | | SCAC3 |
| 3691 | NLME | NOBLE LOGISTICS MANAGEMENT | | | SCAC4 |
| 3692 | NLMF | NATIONAL MANUFACTURING INC | | | SCAC3 |
| 3693 | NLMG | NEW LONDON MOVING AND STORAGE INC | | | SCAC3 |
| 3694 | NLMI | NATIONAL MANAGEMENT INC | | | SCAC3 |
| 3695 | NLMJ | NELMS, JEFF TRUCKING | | | SCAC3 |
| 3696 | NLML | NATIONAL METAL CORPORATION LTD | | | SCAC3 |
| 3697 | NLMN | NORTHLAND MARINE CORPORATION | | | SCAC3 |
| 3698 | NLMO | NELSON, M O & SONS INC | | | SCAC3 |
| 3699 | NLMO | NELSON, M O & SONS INC | | | SCAC4 |
| 3700 | NLMS | NATIONAL MARINE SERVICE INC | | | SCAC3 |
