| 201 | NADX | GENERAL ELECTRIC RAILCAR SERVICES C | | | SCAC4 |
| 202 | NADY | NADY EXPRESS COMPANY INC | | | SCAC3 |
| 203 | NADZ | NORTH AMERICAN DOMESTIC CONTAINER COPR. [(REDZ) REDON, INC.] | | | PWRC |
| 204 | NADZ | North American Domestic Container Corporation | | | RSRV |
| 205 | NADZ | NORTH AMERICAN DOMESTIC CONTAINER C | | | SCAC4 |
| 206 | NAE | Nations Air Express, Inc. d/b/a Miami Air Charter | Callsign: Nations Express, | USA | AVCODES |
| 207 | NAE | National Airways plc | IATA: 9Y, Callsign: National, Designator 9Y recalled by IATA | ETH | AVCODES |
| 208 | NAE | National Airways plc | IATA: 9Y, Callsign: National, | ETH | AVCODES |
| 209 | NAE | Nations Air Express Inc | | | ICAO1 |
| 210 | NAEC | NORTH AMERICAN ENGINE COMPANY | | | SCAC3 |
| 211 | NAEC | NORTH AMERICAN ENGINE COMPANY | | | SCAC4 |
| 212 | NAEG | NAEGELI TRANSPORTATION INC | | | SCAC3 |
| 213 | NAEH | NORTH AMERICAN ENVIRO TECHNOLOGIES | | | SCAC4 |
| 214 | NAEI | NORWEGIAN AMERICAN ENTERPRISES | | | SCAC3 |
| 215 | NAEI | NISCHWITZ ASHBROOK ENERGIES INC | | | SCAC4 |
| 216 | NAEL | NAUTICAL EXPRESS LTD | | | SCAC3 |
| 217 | NAEM | NORTH AMERICAN MARINE INC | | | SCAC3 |
| 218 | NAEO | NAEGLER OIL COMPANY INC | | | SCAC4 |
| 219 | NAEP | NAUTICA EXPRESS | | | SCAC4 |
| 220 | NAER | NEW AGE EXPRESS LLC | | | SCAC4 |
| 221 | NAES | NAVESCO SA | | | SCAC4 |
| 222 | NAET | NORTH AMERICAN EXPRESS TRANSPORTATI | | | SCAC4 |
| 223 | NAEV | NAEVE INC | | | SCAC4 |
| 224 | NAEX | North American-Emery Corp. | added 10/1959; 4/1961; eliminated 4/1963 | | NAKINA |
| 225 | NAEX | North Americana~Emery Corp. | added 10/59; 4/61 | | NRHS |
| 226 | NAEX | NORTH AMERICAN-EMERY CORP. | | | PWRC |
| 227 | NAF | Royal Netherlands Air Force (Koninklijke Luchtmacht) | Callsign: Netherlands Air Force, | NL | AVCODES |
| 228 | NAF | Royal Netherlands Air Force | | | ICAO1 |
| 229 | NAFA | NORTH ATLANTIC FRENCH ATLANTIC FREI | | | SCAC3 |
| 230 | NAFB | NORTH AMERICAN VAN LINES (FLAT BED | | | SCAC3 |
| 231 | NAFC | NAF TRANSPORTATION CO | | | SCAC3 |
| 232 | NAFD | NATIONAL FOOD CORPORATION | | | SCAC3 |
| 233 | NAFD | NATIONAL FOOD CORPORATION | | | SCAC4 |
| 234 | NAFE | NATIONAL FOOD EXPRESS INC | | | SCAC3 |
| 235 | NAFH | NATIONAL FREIGHT CARRIERS (DIV OF L | | | SCAC3 |
| 236 | NAFI | NORTH ATLANTIC FREIGHT FORWARDERS I | | | SCAC3 |
| 237 | NAFJ | NATIONAL FREIGHT OF FLORIDA INC | | | SCAC3 |
| 238 | NAFL | NATIONAL FARM LINES | | | SCAC3 |
| 239 | NAFM | NAF MARITIME CONSULTANT INC. | | | SCAC3 |
| 240 | NAFO | NAWF DELIVERY CO | | | SCAC3 |
| 241 | NAFO | N A W F CO INC | | | SCAC4 |
| 242 | NAFP | NORTH AMERICAN TANK & FREIGHT LINES | | | SCAC3 |
| 243 | NAFQ | NATIONAL FREIGHT INC (DEDICATED DIV | | | SCAC4 |
| 244 | NAFR | NORTH AMERICAN FREIGHT SYSTEMS INC | | | SCAC3 |
| 245 | NAFS | NEWS & FILM SERVICE, INC | | | SCAC3 |
| 246 | NAFT | NATIONAL FREIGHT INC | | | SCAC3 |
| 247 | NAFT | NATIONAL FREIGHT INC | | | SCAC4 |
| 248 | NAFTA | NAFTA-PETROCHEM | | SI | VKM |
| 249 | NAFU | NDMA | | N | BIC |
| 250 | NAFU | NORWEGIAN DEFENCE LOGISTIC ORG-AIR | | | SCAC4 |
| 251 | NAFW | NATIONAL FREIGHTWAYS INC | | | SCAC3 |
| 252 | NAFX | General Electric Rail Services Corp. | added 1/2000; 7/2000-7/2005 | | NAKINA |
| 253 | NAFX | General Electric Railcar Services Corp. | added 1/1984; 1/1994; eliminated 1/2000 | | NAKINA |
| 254 | NAFX | North American Car Corp. | added 1/1959; 4/1961-1/1980; eliminated 1/1984 | | NAKINA |
| 255 | NAFX | North American Car Corp. | added 1/59; 4/61-1/80 | | NRHS |
| 256 | NAFX | General Electric Railcar Services Corp. | 1/94; eliminated 1/2000 | | NRHS |
| 257 | NAFX | General Electric Rail Services Corp. | added 1/2000; 7/2000 | | NRHS |
| 258 | NAFX | (NATX) GENERAL ELECTRIC RAIL SERVICES CORPORATION | | | PWRC |
| 259 | NAFX | GE Rail Services | | | RSRV |
| 260 | NAFX | GENERAL ELECTRIC RAILCAR SERVICES C | | | SCAC4 |
| 261 | NAG | Northern Air Charter Aps & Co KG | Callsign: Stardust, | D | AVCODES |
| 262 | NAG | NAEW&C Force E-3A Fleet | Callsign: Nato, | D | AVCODES |
| 263 | NAG | Nagano Electric Railway | | J | TRAFFIC |
| 264 | NAGA | NAGASHIKI SHIPPING CO LTD | | | SCAC4 |
| 265 | NAGA | | City: Nagasaki | J | TRAFFIC |
| 266 | NAGAB | Nagasaki Bus | | J | TRAFFIC |
| 267 | NAGADEN | Nagaden Bus | | J | TRAFFIC |
| 268 | NAGARA | Nagaragawa Railway | | J | TRAFFIC |
| 269 | NAGB | NAGEL, BRUCE TRUCKING | | | SCAC3 |
| 270 | NAGC | NAGLIC, GERALD J | | | SCAC3 |
| 271 | NAGI | NAIGAI NITTO CO LTD. | | | SCAC3 |
| 272 | NAGL | NAGLEE MOVING & STORAGE, INC | | | SCAC3 |
| 273 | NAGN | NEW AGE TRANSPORTATION INC | | | SCAC4 |
| 274 | NAGO | NORTH AMERICAN GRAPPLING ASSOCIATIO | | | SCAC4 |
| 275 | NAGOYA | | City: Nagoya | J | TRAFFIC |
| 276 | NAGOYAB | Nagoya Bus Co. | | J | TRAFFIC |
| 277 | NAGR | NATIONAL GROCERS CO LTD | | | SCAC3 |
| 278 | NAGU | TRANSPORT NAGELS N.V. | | B | BIC |
| 279 | NAGU | TRANSPORT NAGELS N V | | | SCAC4 |
| 280 | NAGY | NAGY, LOUIS J | | | SCAC4 |
| 281 | NAH | Nahanni Air Services Ltd. | Callsign: Nahanni, | CDN | AVCODES |
| 282 | NAH | Nahanni Air Services Ltd | | | ICAO1 |
| 283 | NAHA | Naha Bus Co. | | J | TRAFFIC |
| 284 | NAHC | NATIONWIDE HORSE CARRIERS INC | | | SCAC3 |
| 285 | NAHG | NAT SHIPPING | | | SCAC4 |
| 286 | NAHI | NEWMAN, A H INC | | | SCAC4 |
| 287 | NAHL | NORTHEAST AUTO HAUL | | | SCAC4 |
| 288 | NAHM | NORTH AMERICAN MOVING & STORAGE | | | SCAC4 |
| 289 | NAHN | NORTH-AIR HELICOPTERS INC | | | SCAC4 |
| 290 | NAHU | NORTH AMERICAN HELIUM | | CDN | BIC |
| 291 | NAHU | NAVISMART PRIVATE LIMITED | | | SCAC4 |
| 292 | NAHX | General Electric Rail Services Corp. | added 1/2000; 7/2000-7/2005 | | NAKINA |
| 293 | NAHX | General Electric Railcar Services Corp. | added 1/1984; 1/1994; eliminated 1/2000 | | NAKINA |
| 294 | NAHX | North American Car Corp. | 1/1952-1/1980; eliminated 1/1984 | | NAKINA |
| 295 | NAHX | North American Car Corp. | 1/52-1/80 | | NRHS |
| 296 | NAHX | General Electric Railcar Services Corp. | 1/94; eliminated 1/2000 | | NRHS |
| 297 | NAHX | General Electric Rail Services Corp. | added 1/2000; 7/2000 | | NRHS |
| 298 | NAHX | (NATX) G. E. RAIL SERVICES CORP - WONDER/HOSTESS, LESSOR | | | PWRC |
| 299 | NAHX | GE Rail Services | | | RSRV |
| 300 | NAHX | GENERAL ELECTRIC RAILCAR SERVICES C | | | SCAC4 |
