| 3201 | REVR | REVERE TRANSPORT INC | | | SCAC3 |
| 3202 | REVS | REEVES, J & K & M & B TRUCKING | | | SCAC3 |
| 3203 | REVS | REAVIS, BOBBY CO INC | | | SCAC4 |
| 3204 | REVT | REEVES TRUCKING | | | SCAC3 |
| 3205 | REVU | REVISS SERVICES (UK) LTD | | GB | BIC |
| 3206 | REVU | REVISS SERVICES (UK) LTD | | | SCAC4 |
| 3207 | REVW | REEVES WAREHOUSE INC | | | SCAC3 |
| 3208 | REW | Regional Air Express GmbH | Callsign: Regional Wings, Ceased operations at start of 2010. | D | AVCODES |
| 3209 | REW | Regional Air Express | | | ICAO1 |
| 3210 | REWA | REED WAREHOUSES, INC, THE | | | SCAC3 |
| 3211 | REWC | R E W ASSOCIATES | | | SCAC3 |
| 3212 | REWD | READERS WHOLESALE DISTRIBUTORS LTD | | | SCAC4 |
| 3213 | REWE | RED WING EXCURSIONS | | | SCAC3 |
| 3214 | REWE | REDWOOD EXPRESS INC | | | SCAC4 |
| 3215 | REWH | RED & WHITE TRUCKING SERVICE, INC | | | SCAC3 |
| 3216 | REWI | RED WING TRUCKING CO | | | SCAC3 |
| 3217 | REWU | RENTAL WORLD AG | | NL | BIC |
| 3218 | REWU | RENTAL WORLD AG | | | SCAC4 |
| 3219 | REX | Ram Air Freight, Inc. | Callsign: Ram Express, | USA | AVCODES |
| 3220 | REX | Regional Express Pty Limited | IATA: ZL, IATA Prefix: 899, | AUS | AVCODES |
| 3221 | REX | Ram Air Freight | | | ICAO1 |
| 3222 | REX | REA Express, Inc. | added 1/1971; eliminated 4/1974 | | NAKINA |
| 3223 | REX | REA Express, owned and operated by Railway Express Agency, Inc. | eliminated 1/1971 | | NAKINA |
| 3224 | REX | Railway Express Agency, Inc. | 7/1937-4/1938 (not listed); 1/1941-4/1970 | | NAKINA |
| 3225 | REX | Railway Express Agency, Inc. | 1/52-4/70 | | NRHS |
| 3226 | REX | REA Express, Inc. | eliminated 4/74 | | NRHS |
| 3227 | REX | REX EXPRESS, INC. (RAILWAY EXPRESS AGENCY, INC.) | | | PWRC |
| 3228 | REX | Rail Express Systems | | GB | TRAFFIC |
| 3229 | REXA | REA EXPRESS INC | | | SCAC3 |
| 3230 | REXA | Railway Express Agency, Inc. | Real: REX | USA | TRAFFIC |
| 3231 | REXC | ROCKET EXPRESS DELIVERY INC | | | SCAC4 |
| 3232 | REXD | RED EXPRESS | | | SCAC4 |
| 3233 | REXE | R E X CARTAGE COMPANY | | | SCAC3 |
| 3234 | REXER | Albert Rexer GmbH & Co. KG | City: Calw | D | TRAFFIC |
| 3235 | REXF | ROLL-EX FREIGHTWAYS INC | | | SCAC4 |
| 3236 | REXG | REX TRANSPORT | | | SCAC3 |
| 3237 | REXI | REX MOVING & STORAGE CO | | | SCAC3 |
| 3238 | REXJ | RJ'S EXPEDITING | | | SCAC4 |
| 3239 | REXK | ROADTRAN EXPRESS | | | SCAC4 |
| 3240 | REXL | ROBERVAL EXPRESS LIMITED | | | SCAC3 |
| 3241 | REXL | RAIL EXPRESS LLC | | | SCAC4 |
| 3242 | REXM | REX MOTOR TRANS, INC | | | SCAC3 |
| 3243 | REXM | ROMAN EXPRESS INC | | | SCAC4 |
| 3244 | REXN | REBEL EXPRESS INC | | | SCAC3 |
| 3245 | REXN | REBEL EXPRESS INC | | | SCAC4 |
| 3246 | REXO | REXCO | | | SCAC3 |
| 3247 | REXO | ROUTE 88 TRANSPORTATION INC | | | SCAC4 |
| 3248 | REXP | RUDOLF EXPRESS CO | | | SCAC3 |
| 3249 | REXP | REDBIRD EXPRESS LLC | | | SCAC4 |
| 3250 | REXQ | KING, REX | | | SCAC3 |
| 3251 | REXQ | RIO EXPRESS | | | SCAC4 |
| 3252 | REXS | R-EXPRESS INC | | | SCAC3 |
| 3253 | REXS | RAMA EXPRESS | | | SCAC4 |
| 3254 | REXSK | REXIAS, a.s. | | SK | VKM |
| 3255 | REXT | REX TRANSPORTATION CO | | | SCAC3 |
| 3256 | REXU | REXWAL SERVICES S A | | | SCAC4 |
| 3257 | REXV | ROYAL EXPRESS TRANSPORT INC | | | SCAC3 |
| 3258 | REXV | RUNWAY EXPRESS | | | SCAC4 |
| 3259 | REXW | REX WAREHOUSE & DISTRIBUTING | | | SCAC3 |
| 3260 | REXW | REXWAL SERVICES SA | | FR | VKM |
| 3261 | REXWL | REXWAL SERVICES SA | | CH | VKM |
| 3262 | REXX | IRESIN LLC | | | PWRC |
| 3263 | REXX | IRESIN LLC | | | SCAC4 |
| 3264 | REXY | REIDS EXPRESS INC | | | SCAC3 |
| 3265 | REY | Aero-Rey, S.A. de C.V. | Callsign: Aerorey, | MEX | AVCODES |
| 3266 | REY | Aero-Rey | | | ICAO1 |
| 3267 | REYA | REYNA TRUCKING | | | SCAC3 |
| 3268 | REYC | RECYCLE OIL CO | | | SCAC4 |
| 3269 | REYE | REYNARDS EXPRESS | | | SCAC3 |
| 3270 | REYE | REYNOSO EXPRESS | | | SCAC4 |
| 3271 | REYK | REYNOLDS TRUCKING | | | SCAC3 |
| 3272 | REYK | REILLEY TRUCKING INC | | | SCAC4 |
| 3273 | REYL | REYES, LORENZO JR | | | SCAC3 |
| 3274 | REYM | REYNOSO MARTINEZ, JESUS ANTONIO | | | SCAC4 |
| 3275 | REYO | REYNOLDS, B TRUCKING LTD | | | SCAC4 |
| 3276 | REYR | REYCAR TRANSPORT SERVICES LLC | | | SCAC4 |
| 3277 | REYT | REYNOLDS, L R TRANSFER & STORAGE | | | SCAC3 |
| 3278 | REYT | REYNOLDS TRUCKING AND TRANSPORTATIO | | | SCAC4 |
| 3279 | REYU | REYSAS TASIMACILIK VE LOJISTIK A.Ş. | | TR | BIC |
| 3280 | REYV | REVISION MILITARY LTD | | | SCAC4 |
| 3281 | REYW | REYNOLDS TRANSFER AND STORAGE COMPA | | | SCAC3 |
| 3282 | REYW | REYNOLDS TRANSFER & STORAGE INC | | | SCAC4 |
| 3283 | REYY | REYES TRUCKING | | | SCAC4 |
| 3284 | REZ | Airplanes, Inc. d/b/a Cal-West Aviation | Callsign: Cal Air, | USA | AVCODES |
| 3285 | REZ | Cal-West Aviation | | | ICAO1 |
| 3286 | REZ | RALSTON ELEVATOR | | | PWRC |
| 3287 | REZE | REZENDES, K R INC | | | SCAC3 |
| 3288 | REZE | REZENDES, K R INC | | | SCAC4 |
| 3289 | REZK | REITZ TRUCKING | | | SCAC3 |
| 3290 | REZK | REDETZKE CONSTRUCTION INC | | | SCAC4 |
| 3291 | REZL | RETZLOFF MOVING & STORAGE CO | | | SCAC3 |
| 3292 | RF | Ord Air Charter Ply. Ltd. | IATA designator changed from QN* | AUS | AVCODES |
| 3293 | RF | Kanfey-Ha'emek Aviation d/b/a Emek Wings | ICAO: KHE, Callsign: Kanfey Haemek, Name changed to Israir in September 1996. | IL | AVCODES |
| 3294 | RF | Rhodesian Air Services (Pvt.) Ltd. | Callsign: Rhoflight, | RNY | AVCODES |
| 3295 | RF | Florida West International Airways, Inc. | ICAO: FWL, Callsign: Flo West, IATA Prefix: 330, Acquired by Atlas air Worldwide Holdings on 07 April 2016. All operations ceased by March 2017. Name changed from Florida West Airlines | USA | AVCODES |
| 3296 | RF | Erofey LLC t/a E-Cargo Airlines | ICAO: ERF, Callsign: Gulliver, IATA Prefix: 358, | RUS | AVCODES |
| 3297 | RF | Aero K Airlines | ICAO: EOK, Callsign: Aerokorea, AOC acquired on 28 December 2020. Commenced operations on 14 April 2021. Name changed from KAIR Airlines. | PRK | AVCODES |
| 3298 | RF | RENFE | | E | TRAFFIC |
| 3299 | RF | Railflex GmbH | | DE | VKM |
| 3300 | RF&P | Richmond, Fredricksburg & Potomac R.R. Co. | 8/1920-7/1936 | | NAKINA |
