| 3601 | CDN | Canadian Airlines | IATA: CP | | ICAO1 |
| 3602 | CDNA | CARDINAL SERVICE INC | | | SCAC3 |
| 3603 | CDNA | CANADIAN AIR CRANE | | | SCAC4 |
| 3604 | CDNB | CARDINAL TRANSPORT INC (BROKERAGE D | | | SCAC4 |
| 3605 | CDNC | CHRISTIAN DELIVERY & CHAIR SERVICE | | | SCAC3 |
| 3606 | CDNC | CNI INC | | | SCAC4 |
| 3607 | CDND | COORDINATED TRANSPORT | | | SCAC3 |
| 3608 | CDND | CYCLE DISPATCH & DELIVERY | | | SCAC4 |
| 3609 | CDNE | CHAFFEE, DAN E | | | SCAC3 |
| 3610 | CDNG | CALHOUN AND SON TRUCKING CO | | | SCAC3 |
| 3611 | CDNG | COLDREN TRUCKING | | | SCAC4 |
| 3612 | CDNJ | CHRISDAN TRUCKING INC | | | SCAC3 |
| 3613 | CDNJ | CALEDONIA STABLES | | | SCAC4 |
| 3614 | CDNK | CELADON TRUCKING SERVICES INC | | | SCAC3 |
| 3615 | CDNK | CELADON TRUCKING SERVICES INC | | | SCAC4 |
| 3616 | CDNL | CARDINAL TRANSPORTATION SERVICES IN | | | SCAC3 |
| 3617 | CDNM | CAN AM TRANSPORT INC | | | SCAC3 |
| 3618 | CDNN | CLENDENEN TRUCKING | | | SCAC3 |
| 3619 | CDNN | COMPANHIA DE NAVEGACAO NORSUL | | | SCAC4 |
| 3620 | CDNO | CORRIDOR TRANSPORT INC | | | SCAC3 |
| 3621 | CDNP | CANADIAN PACIFIC TRANSPORT (INTERNA | | | SCAC3 |
| 3622 | CDNQ | CAR-DUN-EL DELIVERY SERVICE INC | | | SCAC3 |
| 3623 | CDNQ | CANADA LINE AND TUBE INC | | | SCAC4 |
| 3624 | CDNR | C&D MOVING & STORAGE, INC | | | SCAC3 |
| 3625 | CDNS | CROSSROADS TRANSPORTATION | | | SCAC4 |
| 3626 | CDNT | CARDENAS TRUCKING | | | SCAC4 |
| 3627 | CDNU | COMPAGNIE DES ILES DU NORD | | F | BIC |
| 3628 | CDNU | *CARDINAL FREIGHT CARRIERS | | | PWRC |
| 3629 | CDNU | *CAROTRANS INTERNATIONAL | | | PWRC |
| 3630 | CDNU | Carotrans International | | | RSRV |
| 3631 | CDNU | CAROTRANS INTERNATIONAL, INC | | | SCAC3 |
| 3632 | CDNU | COMPAGNIE DES ILES DU NORD | | | SCAC4 |
| 3633 | CDNV | CHADRON TRAVEL CENTRE | | | SCAC3 |
| 3634 | CDNV | CS DENIZCILIK NAKLIYAT VE TIC LTD S | | | SCAC4 |
| 3635 | CDNW | CLARDEN TRUCKING INC | | | SCAC3 |
| 3636 | CDO | Cargo Dor Limited | Callsign: Cargodor, | GH | AVCODES |
| 3637 | CDO | Tchadia Airlines | IATA: OT, Callsign: Tchadia, Founded in 2018. Commenced operations on 01 October 2018. Ceased operations in August 2022. | TCH | AVCODES |
| 3638 | CDOA | CD LOGISTICS | | | SCAC4 |
| 3639 | CDOC | CAN DO EXPRESS CORP | | | SCAC3 |
| 3640 | CDOC | CENTRO DE OPERACIONES DE BAJA CALIF | | | SCAC4 |
| 3641 | CDOD | CODOTRANS INC | | | SCAC4 |
| 3642 | CDOE | CAN DO ENTERPRISE | | | SCAC3 |
| 3643 | CDOF | CAL DIVE OFFSHORE CONTRACTORS INC | | | SCAC4 |
| 3644 | CDOG | CRESCENT DIAMOND TRUCKING | | | SCAC4 |
| 3645 | CDOH | CROSSROADS COACH LINES INC | | | SCAC3 |
| 3646 | CDOI | COACH D'OR INC | | | SCAC3 |
| 3647 | CDOJ | CORDERO, A AUTO TRANSPORT | | | SCAC3 |
| 3648 | CDOL | CONDOR APPLIANCE REPAIR | | | SCAC3 |
| 3649 | CDOL | CONDOR SHIPPING LLC | | | SCAC4 |
| 3650 | CDOM | CALIENDO TRUCKING | | | SCAC3 |
| 3651 | CDOM | CASTLE DOME TRANSPORT LLC | | | SCAC4 |
| 3652 | CDON | CORONADO TRUCKING INC | | | SCAC4 |
| 3653 | CDOO | CONDOR | | | SCAC3 |
| 3654 | CDOP | CASADO TRANSPORT INC | | | SCAC3 |
| 3655 | CDOP | CARDIE OIL INC | | | SCAC4 |
| 3656 | CDOQ | CONDON TRANSPORT INC | | | SCAC3 |
| 3657 | CDOQ | CONDON TRANSPORT INC | | | SCAC4 |
| 3658 | CDOR | CONDOR EXPRESS | | | SCAC3 |
| 3659 | CDOS | CROWN DISTRIBUITON SERVICES | | | SCAC3 |
| 3660 | CDOS | CARGA DOS | | | SCAC4 |
| 3661 | CDOT | CONNECTICUT DEPARTMENT OF TRANSPORTATION | | | PWRC |
| 3662 | CDOT | CORDIERO TRUCKING | | | SCAC3 |
| 3663 | CDOT | Connecticut Department of Transportation | | USA | TRAFFIC |
| 3664 | CDP | Aero-Cóndor, S.A. | IATA: Q6, Callsign: Condor-Peru, IATA Prefix: 381, Operations suspended during June 2008. Designator Q6 recalled by IATA | PE | AVCODES |
| 3665 | CDP | Aero-Cóndor, S.A. | IATA: P2, Founded in 1975. IATA designator changed to Q6. | PE | AVCODES |
| 3666 | CDP | Aero Condor Peru | IATA: Q6 | | ICAO1 |
| 3667 | CDPA | COMPANIA MARITIMA ONDA S A OF PANAM | | | SCAC3 |
| 3668 | CDPA | CEDAR POLY LLC | | | SCAC4 |
| 3669 | CDPB | CIELOS DEL PERU SA | | | SCAC4 |
| 3670 | CDPC | CASCADE SHIPPING CO. | | | SCAC3 |
| 3671 | CDPC | CASCADE SHIPPING CO. | | | SCAC4 |
| 3672 | CDPD | C D P TRUCKING CO INC | | | SCAC4 |
| 3673 | CDPE | CASCADE | | | SCAC4 |
| 3674 | CDPG | CANADIAN PACIFIC SEAFOOD LTD | | | SCAC4 |
| 3675 | CDPH | CENTRAL DISPATCH INC | | | SCAC3 |
| 3676 | CDPH | CENTRAL DISPATCH INC | | | SCAC4 |
| 3677 | CDPI | COURIER DISPATCH GROUP, INC | | | SCAC3 |
| 3678 | CDPI | CARRIER DISPATCH INC | | | SCAC4 |
| 3679 | CDPJ | CONFECCIONES DEL PACIFICO S DE RL D | | | SCAC4 |
| 3680 | CDPL | CON-DOR PIPE LINE COMPANY | | | SCAC3 |
| 3681 | CDPM | CANADA DRY POTOMAC CORP | | | SCAC4 |
| 3682 | CDPN | C & D TRANSPORTATION INC | | | SCAC3 |
| 3683 | CDPN | CONARD TRANSPORTATION INC | | | SCAC4 |
| 3684 | CDPO | COMMERCIAL DISPOSAL INC | | | SCAC3 |
| 3685 | CDPP | CODDINGTONS, DARREL PORT PRODUCTS | | | SCAC3 |
| 3686 | CDPQ | CHEMICAL DISPATCH INC | | | SCAC3 |
| 3687 | CDPQ | COMPAGNIE DU PONANT | | | SCAC4 |
| 3688 | CDPR | C & D TRANSPORTATION INC | | | SCAC3 |
| 3689 | CDPR | CONTROLES DE PRESION DE CIUDAD JUAR | | | SCAC4 |
| 3690 | CDPS | C & D SPECIALIZED TRANSPORT INC | | | SCAC3 |
| 3691 | CDPS | CUDD PRESSURE CONTROL INC | | | SCAC4 |
| 3692 | CDPT | CORONADO PAINT COMPANY INC | | | SCAC3 |
| 3693 | CDPT | CREATIVE DISPLAY LIMITED | | | SCAC4 |
| 3694 | CDPV | CDN TRANSPORTATION SERVICES | | | SCAC3 |
| 3695 | CDPW | CD PETROLEUM LLC | | | SCAC4 |
| 3696 | CDPX | Cloverland Dairy Products Co., Inc. | 7/1937-4/1947 | | NAKINA |
| 3697 | CDPX | Cloverland Dairy Products Co., Inc. | Apr-38 | | NRHS |
| 3698 | CDPX | *CLOVERLAND DAIRY PRODUCTS CO., INC. | | | PWRC |
| 3699 | CDPX | *CHEVRON USA INC. | | | PWRC |
| 3700 | CDPX | Chevron USA | | | RSRV |
