| 2001 | NEME | NORTHEAST MOTOR EXPRESS | | | SCAC3 |
| 2002 | NEMF | NEW ENGLAND MOTOR FREIGHT, INC | | | SCAC3 |
| 2003 | NEMF | NEW ENGLAND MOTOR FREIGHT INC | | | SCAC4 |
| 2004 | NEMG | NORTHEAST MOVING & STORAGE CO | | | SCAC3 |
| 2005 | NEMG | NEMO TRANSPORTATION INC | | | SCAC4 |
| 2006 | NEMI | NEW ENGLAND MOVING & STORAGE INC | | | SCAC4 |
| 2007 | NEMN | NOURIA ENERGY WHOLESALE MAINE NC | | | SCAC4 |
| 2008 | NEMO | NEBSMOVE | | | SCAC3 |
| 2009 | NEMO | NEFZGER, MONTE | | | SCAC4 |
| 2010 | NEMR | NEWMAN TRUCKING | | | SCAC4 |
| 2011 | NEMT | NEWMAN TRANSPORTATION | | | SCAC3 |
| 2012 | NEMX | Covanta Montgomery Inc. | added 4/2003; eliminated 1/2004; 7/2005 (not listed) | | NAKINA |
| 2013 | NEMX | Neman Tank Car Co. | 7/1930-7/1935 | | NAKINA |
| 2014 | NEMX | Ogden Martin Systems of Montgomery | added 10/1996; 7/2000; eliminated 4/2003 | | NAKINA |
| 2015 | NEMX | Ogden Martin Systems of Montgomery | added 10/96; 7/2000 | | NRHS |
| 2016 | NEMX | *NEMAN TANK CAR CO. | | | PWRC |
| 2017 | NEMX | +COVANTA MONTGOMERY INC. [OGDEN MARTIN SYSTEMS OF MONTGOMERY] | | | PWRC |
| 2018 | NEMX | Ogden Martin Systems of Montgomery | | | RSRV |
| 2019 | NEMX | COVANTA MONTGOMERY INC | | | SCAC4 |
| 2020 | NEMY | NORTHERN ENVIRONMENTAL MANAGEMENT S | | | SCAC4 |
| 2021 | NEN | North-East Airlines Ltd. | Callsign: Northeast Swan, | WAN | AVCODES |
| 2022 | NEN | North-East Airlines | | | ICAO1 |
| 2023 | NEND | NORTH END AUTO FREIGHT | | | SCAC3 |
| 2024 | NENE | Nebraska Northeastern Ry. Co. | 7/2000-7/2005 | | NAKINA |
| 2025 | NENE | Nebraska Northeastern Ry. Co. | Jul-00 | | NRHS |
| 2026 | NENE | NEBRASKA NORTHEASTERN RAILWAY | | | PWRC |
| 2027 | NENE | Nebraska Northeastern Railway | | | RSRV |
| 2028 | NENE | NEBRASKA NORTHEASTERN RAILWAY COMPA | | | SCAC4 |
| 2029 | NENF | NEENAH FOUNDRY TRANSPORT | | | SCAC3 |
| 2030 | NENF | NEENAH TRANSPORT INC | | | SCAC4 |
| 2031 | NENG | NEW ENGLAND TRAVEL SERVICE | | | SCAC3 |
| 2032 | NENG | NEW ENGLAND TRANSFER SERVICES INC | | | SCAC4 |
| 2033 | NENL | NENO TRANSPORT | | | SCAC4 |
| 2034 | NENM | NEWMAN, NOLAN MOTORS INC | | | SCAC3 |
| 2035 | NENT | NEWARK WAREHOUSE & TRANSPORTATION C | | | SCAC3 |
| 2036 | NENT | NENE TRANSPORT LLC | | | SCAC4 |
| 2037 | NENU | BOLUDA LINES S.A | | E | BIC |
| 2038 | NENU | NENUFAR SHIPPING SA | | | SCAC4 |
| 2039 | NENW | NEWS NORTHWEST INC | | | SCAC3 |
| 2040 | NEO | Aeronautica del Principado, S.L. | | E | AVCODES |
| 2041 | NEO | Northeastern Oklahoma R.R. Co. | 1/1952-10/1966 | | NAKINA |
| 2042 | NEO | Northeast Oklahoma R.R. Co. | 1/1941-1/1950 | | NAKINA |
| 2043 | NEO | Northeastern Oklahoma R.R. Co. | 1/52-10/66 | | NRHS |
| 2044 | NEO | NORTHEAST OKLAHOMA RAILROAD | | | PWRC |
| 2045 | NEOC | NEWSOM OIL COMPANY | | | SCAC3 |
| 2046 | NEOC | NEW ENGLAND OIL COMPANY INC | | | SCAC4 |
| 2047 | NEOD | NEODESHA PLASTICS INC | | | SCAC4 |
| 2048 | NEOF | NEW ENGLAND OFFICE CONNECTION INC | | | SCAC3 |
| 2049 | NEOI | NEWTON OIL COMPANY INC | | | SCAC4 |
| 2050 | NEOM | NEOM MARITIME (SINGAPORE) PTE LTD | | | SCAC4 |
| 2051 | NEOMAN | Neoman Bus GmbH | Neoman Bus GmbH, also known as Neoman Bus Group, was a bus, trolleybus and coach manufacturer in Germany, created when MAN Nutzfahrzeuge AG acquired Neoplan Bus GmbH in 2001 | D | TRAFFIC |
| 2052 | NEON | Neochim AD / Неохим АД | | BG | VKM |
| 2053 | NEOP | NEW ORLEANS PUBLIC SERVICE INC | | | SCAC3 |
| 2054 | NEOP | Neoplan | | D | TRAFFIC |
| 2055 | NEOPUL | Neopul | | P | TRAFFIC |
| 2056 | NEOR | NEW ORLEANS TRUCKING | | | SCAC4 |
| 2057 | NEOR | | City: New Orleans | USA | TRAFFIC |
| 2058 | NEOS | NEW ENGLAND SHIPPING AGENCIES INC, | | | SCAC3 |
| 2059 | NEOT | NELSON, OTTO, AND SONS, INC | | | SCAC3 |
| 2060 | NEOT | NELSON, OTTO MOVING AND STORAGE INC | | | SCAC4 |
| 2061 | NEOX | New England Oil Refining Co. | 7/1923 | | NAKINA |
| 2062 | NEOX | NEW ENGLAND OIL REFINING CO. | | | PWRC |
| 2063 | NEP | Neptune Air Sdn Bhd | IATA: N7, Callsign: Warisan, IATA Prefix: 264, Name changed to My Jet Xpress Airlines Sdn.Bhd. dba My Jet Xpress | MAL | AVCODES |
| 2064 | NEP | NEPC Airlines ( A Division of NEPC Micon Limited) | IATA: D5, Callsign: Nepcair, Designator D5 recalled by IATA | IND | AVCODES |
| 2065 | NEP | My Jet Xpress Airlines Sdn.Bhd. dba My Jet Xpress | IATA: N7, Callsign: Warisan, IATA Prefix: 264, Name changed from Neptune Air Sdn Bhd. | MAL | AVCODES |
| 2066 | NEP | NEKOOSA EDWARDS PAPER | | | PWRC |
| 2067 | NEPA | NEPA PALLET & CONTAINER CO INC | | | SCAC4 |
| 2068 | NEPB | NATIONAL EXPRESS INC | | | SCAC3 |
| 2069 | NEPC | NEPTUNE CONTRACT CARRIER INC | | | SCAC3 |
| 2070 | NEPD | NEPSTAD OIL COMPANY | | | SCAC4 |
| 2071 | NEPE | NEPECO CORPORATION | | | SCAC3 |
| 2072 | NEPE | NEPTUN EXPRESS INC | | | SCAC4 |
| 2073 | NEPF | NEWPORT AIR FREIGHT INC | | | SCAC3 |
| 2074 | NEPF | NALCO COMPANY (NALCO ENERGY PRIVATE | | | SCAC4 |
| 2075 | NEPI | N E W PLASTICS CORPORATION | | | SCAC3 |
| 2076 | NEPJ | NITRO EXPRESS INC | | | SCAC3 |
| 2077 | NEPL | NORTHWEST PALLET | | | SCAC4 |
| 2078 | NEPM | NEPSTAD OIL | | | SCAC4 |
| 2079 | NEPN | N E PENN SHIPPERS CO-OP ASSOCIATION | | | SCAC3 |
| 2080 | NEPO | NORTHEAST TRANSPORT COMPANY | | | SCAC3 |
| 2081 | NEPR | NEW ENTERPRISE STONE & LIME CO INC | | | SCAC4 |
| 2082 | NEPS | NETWORK EXPRESS INC | | | SCAC3 |
| 2083 | NEPS | NEP SUPERSHOOTERS LP | | | SCAC4 |
| 2084 | NEPT | NEPTUNE WORLD-WIDE MOVING, INC | | | SCAC3 |
| 2085 | NEPU | NEPTUNE GLOBAL LOGISTICS PTE LTD | | SGP | BIC |
| 2086 | NEPU | NEPTUNE ORIENT LINES, LTD. | | | PWRC |
| 2087 | NEPU | Neptune Orient Lines | | | RSRV |
| 2088 | NEPU | NEPTUNE ORIENT LINES, LTD. | | | SCAC3 |
| 2089 | NEPU | APL CO PTE LTD-NOL GROUP | | | SCAC4 |
| 2090 | NEPW | NEW ENGLAND PUBLIC WEAREHOUSE INC | | | SCAC3 |
| 2091 | NEPW | NEPW HOLDINGS INC | | | SCAC4 |
| 2092 | NEPX | Nekoosa-Edwards Paper Co. | 7/1932-1/1941; 1/1943-1/1945 (not listed) | | NAKINA |
| 2093 | NEPX | Nekoosa-Edwards Paper Co. | Apr-38 | | NRHS |
| 2094 | NEPX | NEKOOSA-EDWARDS PAPER CO. | | | PWRC |
| 2095 | NEPX | NATIONAL FRUIT PRODUCT CO INC | | | SCAC3 |
| 2096 | NEPZ | NEW ENGLAND PRODUCE CENTER | | | PWRC |
| 2097 | NEPZ | FLEXI-VAN LEASING INC | | | SCAC4 |
| 2098 | NEQ | Transportes Aereos Neuguinos Sociedad Del Estado (T.A.N.S.E.) | Callsign: Neuquinos, | RA | AVCODES |
| 2099 | NEQC | NINE ONE TWO THREE-EIGHT ZERO NINE | | | SCAC4 |
| 2100 | NEQN | NINE ZERO EIGHT EIGHT-ONE FOUR ONE | | | SCAC4 |
