| 3201 | CD&M | Clinton, Davenport & Muscatine R.R. | 7/1923 | | NAKINA |
| 3202 | CD&M | Clinton, Davenport & Muscatine R.R. | 23-Jul | | NRHS |
| 3203 | CD&M | CLINTON, DAVENPORT & MUSCATINE RWY. | | | PWRC |
| 3204 | CDA | Aerocardal | Callsign: Cardal, ICAO callsign changed to Aerocardal | RCH | AVCODES |
| 3205 | CDA | Aerocardal | Callsign: Aerocardal, ICAO callsign changed from Cardal | RCH | AVCODES |
| 3206 | CDA | Aerocardal | | | ICAO1 |
| 3207 | CDA | Central de Aragon | | E | TRAFFIC |
| 3208 | CDAA | CHIMEX TRUCKING AND TRADING INC | | | SCAC4 |
| 3209 | CDAA | Aerocardal | Real: CDA | RCH | TRAFFIC |
| 3210 | CDAB | CONSOLIDATED BUS CO INC | | | SCAC3 |
| 3211 | CDAB | COLLECTIONS DABA-DOO INC | | | SCAC4 |
| 3212 | CDAC | Bangor and Aroostook Rd. Co. | added 4/2001; eliminated 4/2002; 7/2005 | | NAKINA |
| 3213 | CDAC | Canadian American R.R. Co. | added 4/1995; 7/2000; eliminated 4/2001 | | NAKINA |
| 3214 | CDAC | Canadian American R.R. Co. | added 4/95; 7/2000; eliminated 4/2001 | | NRHS |
| 3215 | CDAC | Bangor and Aroostook Rd. Co. | added 4/2001 | | NRHS |
| 3216 | CDAC | BANGOR & AROOSTOOK RAILROAD (MONTREAL, MAINE & ATLANTIC RWY) [CANADIAN AMERICAN RAILROAD] | | | PWRC |
| 3217 | CDAC | Canadian American Railroad (Montreal, Maine and Atlantic) | | | RSRV |
| 3218 | CDAC | Canadian American Railroad | | CDN | TRAFFIC |
| 3219 | CDAD | COUER D ALENE DELIVERY SERVICE | | | SCAC3 |
| 3220 | CDAE | COMPAGNIE D' AFFRETEMENT ET DE TRAN | | | SCAC3 |
| 3221 | CDAE | COTTONWOOD CREEK INC | | | SCAC4 |
| 3222 | CDAF | CAN-AMERICA DRILLING INC | | | SCAC4 |
| 3223 | CDAG | CANADIAN-GULF LINE LIMITED | | | SCAC3 |
| 3224 | CDAH | CARDONA TRUCKING INC | | | SCAC3 |
| 3225 | CDAI | CUNHA DRAYING | | | SCAC3 |
| 3226 | CDAJ | CANADA-JET TRANSPORTATION | | | SCAC3 |
| 3227 | CDAK | COLORADO ATLANTIC ENTERPRISES INC | | | SCAC3 |
| 3228 | CDAM | CANADIAN AMERICAN TRANSPORTATION C | | | SCAC3 |
| 3229 | CDAM | CANADIAN AMERICAN TRANSPORTATION C | | | SCAC4 |
| 3230 | CDAN | COORDINATED DELIVERY & INSTALLATION | | | SCAC3 |
| 3231 | CDAN | COASTAL DANCE RAGE | | | SCAC4 |
| 3232 | CDAP | CDC TRANSPORT LLC | | | SCAC4 |
| 3233 | CDAQ | CONDA, WESLEY D INC | | | SCAC3 |
| 3234 | CDAQ | CELLAR DOOR ANTIQUES | | | SCAC4 |
| 3235 | CDAS | CATE, DICK & SONS TRUCKING CO | | | SCAC3 |
| 3236 | CDAS | CANADA DAWN LTD | | | SCAC4 |
| 3237 | CDAT | CONTINENTAL TRANSPORTATION AND DIST | | | SCAC4 |
| 3238 | CDAU | CANADIAN TIRE CORPORATION | | | PWRC |
| 3239 | CDAU | Canadian Tire Corporation Ltd. | | | RSRV |
| 3240 | CDAV | CANTRELL, DAVE, TRUCKING | | | SCAC3 |
| 3241 | CDAV | CANTRELL, DAVE TRUCKING | | | SCAC4 |
| 3242 | CDAW | CASCADE DRAYAGE AND WAREHOUSING, INC | | | SCAC3 |
| 3243 | CDAY | COOK DRYWALL AND ACOUSTICAL SUPPLY | | | SCAC4 |
| 3244 | CDAZ | CANADIAN TIRE CORPORATION | | | PWRC |
| 3245 | CDAZ | Canadian Tire Corporation Ltd. | | | RSRV |
| 3246 | CDAZ | CANADIAN TIRE CORPORATION LIMITED | | | SCAC4 |
| 3247 | CDB | Air Cordoba | Callsign: Air Cordoba, | E | AVCODES |
| 3248 | CDBA | CDB CARTAGE INC | | | SCAC3 |
| 3249 | CDBA | CDB CARTAGE INC | | | SCAC4 |
| 3250 | CDBB | CHOLLA DISTRIBUTING COMPANY INC | | | SCAC4 |
| 3251 | CDBC | CENTRAL DISTRIBUTION CARRIERS INC | | | SCAC3 |
| 3252 | CDBC | CORRUGADOS DE BC | | | SCAC4 |
| 3253 | CDBD | C & D BONDED DELIVERY SERVICE INC | | | SCAC3 |
| 3254 | CDBE | CORPORATIVO DE TRANSPORTE INTERNACI | | | SCAC4 |
| 3255 | CDBF | CJ DELIVERY SERVICE INC | | | SCAC4 |
| 3256 | CDBG | CREST DISTRIBUTING | | | SCAC3 |
| 3257 | CDBG | CREST DISTRIBUTING INC | | | SCAC4 |
| 3258 | CDBI | COORDINATED CONSOLIDATORS & CARTAGE | | | SCAC3 |
| 3259 | CDBI | CHILDS, ROBERT INC | | | SCAC4 |
| 3260 | CDBJ | CENTRAL DETALLISTA SA DE CV | | | SCAC4 |
| 3261 | CDBL | CONDOR LINES | | | SCAC3 |
| 3262 | CDBL | CODE BLUE EXPEDITE INC | | | SCAC4 |
| 3263 | CDBO | COASTAL DISTRIBUTION CENTER INC | | | SCAC3 |
| 3264 | CDBO | CD LOGISTICS | | | SCAC4 |
| 3265 | CDBP | CALHOUN DISTRIBUTION, INC | | | SCAC3 |
| 3266 | CDBP | CALHOUN DISTRIBUTION INC | | | SCAC4 |
| 3267 | CDBQ | CAMELOT DISTRIBUTION LLC | | | SCAC4 |
| 3268 | CDBR | CONSOLIDATED DISTRIBUTION SERVICES | | | SCAC3 |
| 3269 | CDBR | CONSOLIDATED DISTRIBUTION SERVICES | | | SCAC4 |
| 3270 | CDBS | CAD BUILDING SUPPLIES | | | SCAC3 |
| 3271 | CDBS | CODY BOOKS LTD | | | SCAC4 |
| 3272 | CDBT | CAIDIN BOBBY TRUCKING | | | SCAC3 |
| 3273 | CDBW | CLASSIC DISTRIBUTION AND WAREHOUSE | | | SCAC3 |
| 3274 | CDBW | CDB INC | | | SCAC4 |
| 3275 | CDBX | Consolidated Dressed Beef Co., Inc. | added 7/1967; 4/1970; eliminated 11/1973 | | NAKINA |
| 3276 | CDBX | Consolidated Dressed Beef Co., Inc. | added 7/67; 4/70; eliminated 11/73 | | NRHS |
| 3277 | CDBX | CONSOLIDATED DRESSED BEEF CO. INC. | | | PWRC |
| 3278 | CDBY | CEDAR BAY TRANSPORT | | | SCAC3 |
| 3279 | CDBY | C & D CONTAINER SERVICE INC | | | SCAC4 |
| 3280 | CDC | Carga Del Caribe, S.A. de C.V. | Callsign: Carga Delcaribe, | MEX | AVCODES |
| 3281 | CDC | CDI Cargo Airline Limited | IATA: GJ, Callsign: Hualong, IATA Prefix: 891, Name changed to Zhejiang Loong Airlines Co., Ltd. Founded in April 2011. | PRC | AVCODES |
| 3282 | CDC | Zhejiang Loong Airlines Co., Ltd. | IATA: GJ, Callsign: Hualong, IATA Prefix: 891, ICAO Callsign changed to Loong Air. | PRC | AVCODES |
| 3283 | CDC | Zhejiang Loong Airlines Co., Ltd. | IATA: GJ, Callsign: Loong Air, IATA Prefix: 891, ICAO Callsign changed from Hualong. | PRC | AVCODES |
| 3284 | CDC | CUMBERLAND RY. & COAL CO. | | | PWRC |
| 3285 | CDC | CD Cargo | | CZ | TRAFFIC |
| 3286 | CDC | ČD Cargo a.s. | | CZ | VKM |
| 3287 | CDCA | C & D CARTAGE INC | | | SCAC3 |
| 3288 | CDCB | CRANDALL CORPORATION | | | SCAC3 |
| 3289 | CDCC | CDC CARIBE INC | | | SCAC4 |
| 3290 | CDCD | CEDARCREST DELIVERIES INC | | | SCAC3 |
| 3291 | CDCD | CARDENAS CEVALLOS, DANIEL | | | SCAC4 |
| 3292 | CDCE | CEDAR CREEK ENTERPRISES | | | SCAC3 |
| 3293 | CDCE | CD CONSTRUCTION DRILLING INC | | | SCAC4 |
| 3294 | CDCF | C & D CARTAGE | | | SCAC3 |
| 3295 | CDCG | CARDINAL CARTAGE, INC | | | SCAC3 |
| 3296 | CDCG | CDC TRUCKING | | | SCAC4 |
| 3297 | CDCH | CANDICE MARITIME S A | | | SCAC4 |
| 3298 | CDCI | CRAIGS DISTRIBUTION & CONSOLIDATION | | | SCAC3 |
| 3299 | CDCI | CDC INC | | | SCAC4 |
| 3300 | CDCJ | COLUMBIA DISTRIBUTING CO | | | SCAC3 |
