| 2201 | RDIX | Rapid Industrial Plastics | | | RSRV |
| 2202 | RDIX | ENTEC POLYMERS LLC | | | SCAC4 |
| 2203 | RDJ | Airone Ventures Ltd | Callsign: Redjet, Founded in 2010. Commenced operations on 10 May 2011. Ceased operations on 09 June 2012. | BDS | AVCODES |
| 2204 | RDJB | RDJB TRUCKING INC | | | SCAC4 |
| 2205 | RDJC | REEDER, J C INC | | | SCAC3 |
| 2206 | RDJF | RUNDLETT, RF | | | SCAC4 |
| 2207 | RDJH | RICHARDSON, JOSEPH H | | | SCAC3 |
| 2208 | RDJO | ROBERTO DE JESUS PALACIOS CARRILLO | | | SCAC4 |
| 2209 | RDJT | RDJ TRUCKING | | | SCAC3 |
| 2210 | RDJT | REED, JAMES TRUCKING | | | SCAC4 |
| 2211 | RDK | Irish Air Transport Ltd. | Callsign: Irish Trans, | IRL | AVCODES |
| 2212 | RDK | Memorial Hermann Hospital System Life Flight | Callsign: Red Duke, | USA | AVCODES |
| 2213 | RDK | Irish Air Transport | | | ICAO1 |
| 2214 | RDK | Railion Denmark | | DK | VKM |
| 2215 | RDKA | ROADLINK TRANSPORTATION SOLUTIONS ( | | | SCAC4 |
| 2216 | RDKC | RADTKE CARTAGE INC | | | SCAC3 |
| 2217 | RDKC | REDEKOP MANUFACTURING COMPANY | | | SCAC4 |
| 2218 | RDKE | RADKE, JOHN | | | SCAC3 |
| 2219 | RDKF | RED ROCK TRANSFER INC | | | SCAC4 |
| 2220 | RDKG | REID TRUCKING, INC | | | SCAC3 |
| 2221 | RDKI | R & D TRUCKING INC | | | SCAC3 |
| 2222 | RDKI | RODRIGUEZ TRUCKING | | | SCAC4 |
| 2223 | RDKM | REED TRUCKING | | | SCAC4 |
| 2224 | RDKP | ROAD KINGS TRANSPORT LLC | | | SCAC4 |
| 2225 | RDKQ | RIDDLE TRUCKING | | | SCAC4 |
| 2226 | RDKR | ROAD KING EXPRESS | | | SCAC4 |
| 2227 | RDKS | R & D TRUCK SERVICE | | | SCAC3 |
| 2228 | RDKS | RDK TRANSPORTATION CO INC | | | SCAC4 |
| 2229 | RDKT | RED K TRANSPORT INC | | | SCAC3 |
| 2230 | RDKW | REDS TRUCK & WAGON | | | SCAC3 |
| 2231 | RDL | Roadair Lines | Callsign: Roadair, | CDN | AVCODES |
| 2232 | RDL | Heli-Team AS | Callsign: Red Lift, | N | AVCODES |
| 2233 | RDL | Roadair Lines | | | ICAO1 |
| 2234 | RDLA | RDL TRANSPORTATION INC | | | SCAC4 |
| 2235 | RDLB | RED LABEL EXPRESS | | | SCAC3 |
| 2236 | RDLB | R & D LOGISTICS | | | SCAC4 |
| 2237 | RDLC | REED LAND CLEARING INC | | | SCAC3 |
| 2238 | RDLC | RADIANT LOGISTICS INC | | | SCAC4 |
| 2239 | RDLD | RIEDBOW DAIRY LTD | | | SCAC4 |
| 2240 | RDLF | RD LEASING INC | | | SCAC4 |
| 2241 | RDLG | RAND LEASING CORPORATION | | | SCAC3 |
| 2242 | RDLH | R & D LEASING | | | SCAC3 |
| 2243 | RDLH | RED LEAF LOGISTICS LTD | | | SCAC4 |
| 2244 | RDLK | RID-LAR TRUCKING COMPANY INC | | | SCAC3 |
| 2245 | RDLK | ROADLINK TRANSPORTATION SOLUTIONS ( | | | SCAC4 |
| 2246 | RDLL | RANDALL TRUCKING | | | SCAC3 |
| 2247 | RDLN | RED LINE INC | | | SCAC3 |
| 2248 | RDLP | RANDOLPH COUNTY HAULING CO INC | | | SCAC3 |
| 2249 | RDLP | RODRIGUEZ LOPEZ, LUIS LINO | | | SCAC4 |
| 2250 | RDLQ | REDLINE TRANSPORT | | | SCAC4 |
| 2251 | RDLR | RED LINE TRANSFER INC | | | SCAC3 |
| 2252 | RDLS | RAPID DELIVERY SERVICE INC | | | SCAC4 |
| 2253 | RDLT | RAINFOREST DESIGNS LIMITED | | | SCAC4 |
| 2254 | RDLU | RODELLA TRASPORTI SRL | | I | BIC |
| 2255 | RDLU | RODELLA TRASPORTI SRL | | | SCAC4 |
| 2256 | RDLV | RELIABLE DELIVERY SERVICES INC | | | SCAC3 |
| 2257 | RDM | Air Ada | Callsign: Air Ada, | RIM | AVCODES |
| 2258 | RDM | Air Ada | | | ICAO1 |
| 2259 | RDMA | REDMAN TRUCKING INC | | | SCAC3 |
| 2260 | RDMC | R D M INC | | | SCAC3 |
| 2261 | RDMD | READMOND ENTERPRISES INC | | | SCAC3 |
| 2262 | RDMD | R DIAMOND GROUP OF COMPANIES LTD | | | SCAC4 |
| 2263 | RDME | ROEDER IMPLEMENT INC | | | SCAC4 |
| 2264 | RDMG | RICHARDSON, MALACHI & SONS TRUCKING | | | SCAC4 |
| 2265 | RDMH | REDMOND, BRENT LOGISTICS LLC | | | SCAC4 |
| 2266 | RDMI | ROADMASTER INC | | | SCAC3 |
| 2267 | RDMI | RUSKIN DE MEXICO SA DE CV | | | SCAC4 |
| 2268 | RDMJ | ROADMASTER INC | | | SCAC3 |
| 2269 | RDMK | REDMOND TRUCKING COMPANY | | | SCAC3 |
| 2270 | RDML | ROOD, MYKEL L INC | | | SCAC3 |
| 2271 | RDML | R S M ACRES LTD | | | SCAC4 |
| 2272 | RDMM | REDS MESSENGER & MOVING | | | SCAC3 |
| 2273 | RDMN | R E D MOVING & STORAGE CO | | | SCAC3 |
| 2274 | RDMO | RED MOUNTAIN TRANSPORTATION COMPANY | | | SCAC3 |
| 2275 | RDMP | R D M ENTERPRISES INC | | | SCAC3 |
| 2276 | RDMQ | REDMOND TRUCKING CO | | | SCAC3 |
| 2277 | RDMR | RDM TRANSPORTATION INC | | | SCAC4 |
| 2278 | RDMS | ROADMASTERS INC | | | SCAC3 |
| 2279 | RDMS | READS MOVING SYSTEMS INC | | | SCAC4 |
| 2280 | RDMT | R-D MOTOR, INC | | | SCAC3 |
| 2281 | RDMT | RECUPERADORA DE METALES APC | | | SCAC4 |
| 2282 | RDMU | RODYMAR SHIPPING CO | | ET | BIC |
| 2283 | RDMV | ROYTEC DE MEXICO SA DE CV | | | SCAC4 |
| 2284 | RDMX | RYDER | | | PWRC |
| 2285 | RDMZ | TRANSAMERICA LEASING INC [(REAZ) DETROIT & MACKINAC] | | | PWRC |
| 2286 | RDMZ | TAL International | | | RSRV |
| 2287 | RDMZ | TRANSAMERICA LEASING INC | | | SCAC4 |
| 2288 | RDN | Dinar Lineas Aereas, S.A. | IATA: D7, Callsign: Aero Dinar, IATA Prefix: 429, Ceased operations on 30 September 2002. | RA | AVCODES |
| 2289 | RDN | Red Barn Operations | Callsign: Red Barn, | USA | AVCODES |
| 2290 | RDN | Dinar | IATA: D7 | | ICAO1 |
| 2291 | RDNA | RICHARDSON AUTO TRANSIT | | | SCAC3 |
| 2292 | RDNA | RODAN TRANSPORTATION | | | SCAC4 |
| 2293 | RDNB | REDLINE TRANSPORTATION | | | SCAC4 |
| 2294 | RDNC | RODON AMARANDON SPECIAL MARITIME EN | | | SCAC4 |
| 2295 | RDND | ROADRUNNER DELIVERY INC | | | SCAC4 |
| 2296 | RDNE | RUSSELL DRAYAGE & EXPRESS | | | SCAC3 |
| 2297 | RDNE | RAIDIN EXPRESS | | | SCAC4 |
| 2298 | RDNI | RIEDLINGER INC | | | SCAC3 |
| 2299 | RDNJ | RADNEY, J R | | | SCAC3 |
| 2300 | RDNK | RICHARDSON TRUCKING INC | | | SCAC3 |
