| 101 | RUHE | RUHL, LARRY E | | | SCAC3 |
| 102 | RUHL | RUSS-HILL TRANSPORT | | | SCAC3 |
| 103 | RUHQ | RUHLMAN C TRUCKING CO | | | SCAC3 |
| 104 | RUHRB | Ruhrbahn GmbH | Es entstand im Jahr 2017 aus der Fusion von Essener Verkehrs-AG (EVAG) und Mülheimer Verkehrsgesellschaft (MVG) | D | TRAFFIC |
| 105 | RUHRO | Ruhr Oel GmbH | | DE | VKM |
| 106 | RUHW | RUSHWAY INC | | | SCAC3 |
| 107 | RUHW | RUSHWAY INC | | | SCAC4 |
| 108 | RUIQ | RIL USA INC | | | SCAC4 |
| 109 | RUJB | RUSLING, JOHN B | | | SCAC3 |
| 110 | RUJC | RUSTHOVEN, JACOB CARTAGE INC | | | SCAC3 |
| 111 | RUJD | RUFF, JOHN DISTRIBUTORS | | | SCAC3 |
| 112 | RUJR | RUFER, JOHN R | | | SCAC3 |
| 113 | RUJS | RUBIN, JACK & SONS | | | SCAC3 |
| 114 | RUJT | RUSSELL, JACK TRUCKING | | | SCAC3 |
| 115 | RUK | Ryanair UK Limited | IATA: RK, Callsign: Blue Max, | GB | AVCODES |
| 116 | RüKB | Rügensche Kleinbahn GmbH & Co | Putbus | D | privat-bahn.de |
| 117 | RUKB | | | D | TRAFFIC |
| 118 | RUKB | Rügensche Kleinbahn GmbH | | DE | VKM |
| 119 | RUKC | RUGGIERO TRUCKING CO INC | | | SCAC4 |
| 120 | RUKM | RUCKER MOVING & STORAGE COMPANY | | | SCAC3 |
| 121 | RUKN | RUCKMAN, ROBERT | | | SCAC3 |
| 122 | RUKN | RUKAJ, NIKOLA GALLERY | | | SCAC4 |
| 123 | RUKO | RUKO PRODUCTS INC | | | SCAC4 |
| 124 | RUKR | RUCKER TRUCKING & LEASING INC | | | SCAC3 |
| 125 | RUKS | ROSE, MICK TRUCKING | | | SCAC4 |
| 126 | RUKT | RUKERT TERMINALS CORP | | | SCAC3 |
| 127 | RUKT | RUKERT TERMINALS CORP | | | SCAC4 |
| 128 | RULB | RULEAU BROS TRANSPORT INC | | | SCAC3 |
| 129 | RULBD | RULMENTI SA | | RO | VKM |
| 130 | RULC | RUSSELL, L B CHEMICALS INC | | | SCAC3 |
| 131 | RULC | RAPIDEX USA LLC | | | SCAC4 |
| 132 | RULD | RUSSELL-LANDRUM MOV & STGE INC | | | SCAC3 |
| 133 | RULH | RUDOLPHS INC | | | SCAC4 |
| 134 | RULI | RUSH LOGISTICS INC | | | SCAC4 |
| 135 | RULK | RUSSELL TRUCKING | | | SCAC3 |
| 136 | RULL | RUSSELL TRANSFER COMPANY | | | SCAC3 |
| 137 | RULP | ROUSSILLE TRANSPORT INC | | | SCAC3 |
| 138 | RULQ | RUDLOFF VAN & STORAGE | | | SCAC3 |
| 139 | RULR | RUTLEDGE, RICHARD | | | SCAC4 |
| 140 | RULS | RUDYS LIMOUSINE SERVICE INC | | | SCAC3 |
| 141 | RULS | RULIS TRUCKING INC | | | SCAC4 |
| 142 | RULT | RUSSELL TRANSPORT INC | | | SCAC4 |
| 143 | RULY | RUSSELL TRANSPORT INC (LOCAL DRAYAG | | | SCAC4 |
| 144 | RUM | Air Rum Ltd. | Callsign: Air Rum, | WAL | AVCODES |
| 145 | RUM | Air Rum | | | ICAO1 |
| 146 | RUMB | RUMBLE TRANSPORT LIMITED | | | SCAC3 |
| 147 | RUME | ROUTE MESSENGER SERVICES | | | SCAC3 |
| 148 | RUMI | RUMI, RICHARD & CO INC | | | SCAC4 |
| 149 | RUMK | RUMBOLD, KENNETH D | | | SCAC3 |
| 150 | RUMO | ALL-Rumo Logistica | | BR | TRAFFIC |
| 151 | RUMQ | RUSSO MOTOR EXPRESS INC | | | SCAC3 |
| 152 | RUMR | RUSH MOTOR TRANSIT | | | SCAC3 |
| 153 | RUMS | RUNGE MOVING & STORAGE | | | SCAC3 |
| 154 | RUMU | RUEBERG SPEDITION GMBH & CO. KG | | D | BIC |
| 155 | RUMV | RUSKIN THE MOVER | | | SCAC3 |
| 156 | RUN | ACT Havayollari A.S. (ACT Airlines) t/a myCARGO Airlines | IATA: 9T, Callsign: Cargo Turk, IATA Prefix: 556, Name changed to ACT Havayollari A.S. (ACT Airlines). Designator 9T* reinstated by IATA | TR | AVCODES |
| 157 | RUN | ACT Havayollari A.S. (ACT Airlines) | IATA: 9T, Callsign: Cargo Turk, IATA Prefix: 556, Name changed from ACT Havayollari A.S. (ACT Airlines) t/a myCARGO Airlines. Designator 9T* reinstated by IATA | TR | AVCODES |
| 158 | RUN | ACT Havayollari | | | ICAO1 |
| 159 | RUN | Air ACT | | TR | TRAFFIC |
| 160 | RUNC | RUNAWAY INC | | | SCAC4 |
| 161 | RUND | RUND EXPRESS INC | | | SCAC3 |
| 162 | RUNF | RUNNIN FREE INC | | | SCAC3 |
| 163 | RUNI | RU-AN INC | | | SCAC3 |
| 164 | RUNQ | RUNNERS GROUP CORP | | | SCAC3 |
| 165 | RUNR | RUN-RITE FREIGHT SYSTEMS INC | | | SCAC4 |
| 166 | RUNS | RUSSELL-STIMPSON, INC | | | SCAC3 |
| 167 | RUNT | ROUNTREE SOD SERVICE | | | SCAC3 |
| 168 | RUNU | GEOTRANS | | REU | BIC |
| 169 | RUNW | RUNWAY EXPRESS | | | SCAC3 |
| 170 | RUOC | RUSE TRANSFER | | | SCAC3 |
| 171 | RUOI | RUSSELL OIL CO INC | | | SCAC4 |
| 172 | RUON | ROUTE ONE TRANSPORTATION SERVICES | | | SCAC3 |
| 173 | RUOR | RUSHER OIL CO INC | | | SCAC4 |
| 174 | RUOT | RUDOLPH TRANSFER & STORAGE CO | | | SCAC3 |
| 175 | RUPC | ROUNDUP POWDER CO | | | SCAC3 |
| 176 | RUPD | RUSTCO PRODUCTS CO | | | SCAC3 |
| 177 | RUPH | RUPPRECHT, HERBERT INC | | | SCAC3 |
| 178 | RUPK | RUPP, KEVIN TRUCKING | | | SCAC4 |
| 179 | RUPL | RUPPEL TRANSFER INC | | | SCAC3 |
| 180 | RUPM | RUPPE MOTOR LINES INC | | | SCAC3 |
| 181 | RUPR | RUPPEL, RICHARD D | | | SCAC3 |
| 182 | RUPT | RUPPRECHT, RAY TRANSPORT SERVICE | | | SCAC3 |
| 183 | RUQT | RUTTER BROS DAIRY INC | | | SCAC4 |
| 184 | RUR | RUSS JSC Air Transport Co. | IATA: NR, Callsign: Angara, IATA Prefix: 437, | RUS | AVCODES |
| 185 | RUR | RusAero FSC | | RUS | AVCODES |
| 186 | RUR | Russair Aircompany, Closed Joint Stock Company | Callsign: Russtar, | RUS | AVCODES |
| 187 | RUR | Rusaero | | | ICAO1 |
| 188 | RURB | Rurtalbus | | D | TRAFFIC |
| 189 | RURN | RUCKRUN | | | SCAC4 |
| 190 | RURT | RUSSART TRAVEL SERVICE | | | SCAC3 |
| 191 | RURU | EESTI CHEM OU | | EST | BIC |
| 192 | RUS | Cirrus Airlines Luftfahrtgesellschaft mbH | IATA: C9, Callsign: Cirrus Air, Founded in February 1995. Ceased operations on 20 January 2012. Name changed from Cirrus Luftahrtgesellschaft mbH | D | AVCODES |
| 193 | RUS | Cirrus Luftfahrtgesellschaft mbH | IATA: C9, Callsign: Cirrus Air, Name changed to Cirrus Airlines Luftahrtgesellschaft mbH | D | AVCODES |
| 194 | RUS | Sky Atlas | | RUS | AVCODES |
| 195 | RUS | Cirrus Airlines | IATA: C9 | | ICAO1 |
| 196 | RUSA | RUSLIS INC | | | SCAC4 |
| 197 | RUSA | Armed Forces of the Russian Federation | | RUS | TRAFFIC |
| 198 | RUSB | RUSTAMERE STABLES | | | SCAC4 |
| 199 | RUSC | RUBYSTAR SHIPPING CORPORATION | | | SCAC3 |
| 200 | RUSC | RUSCH, K W INC | | | SCAC4 |
