| 9901 | CMDO | COMDISCO TRANSPORT INC | | | SCAC4 |
| 9902 | CMDP | CAMDEN SHIPPING | | | SCAC3 |
| 9903 | CMDPS | CARGO Master Sp. z o.o. | | PL | VKM |
| 9904 | CMDQ | CENTRAL MARYLAND LINES INC | | | SCAC3 |
| 9905 | CMDR | COMMODORE TRANSPORT LLC | | | SCAC4 |
| 9906 | CMDS | CMS TRANSPORTATION SERVICES INC | | | SCAC3 |
| 9907 | CMDU | Canadian-American Transport | | | SCAC2 |
| 9908 | CMDU | CMA-CGM | | | SCAC2 |
| 9909 | CMDU | COMPAGNIE MARITIME DAFFRETEMEN | | | SCAC3 |
| 9910 | CMDU | COMPAGNIE MARITIME D'AFFRETEMENT | | | SCAC4 |
| 9911 | CMDX | Cargill, Inc. | added 10/1993; 1/1994-7/2005 | | NAKINA |
| 9912 | CMDX | Cargill, Inc. | added 10/93; 1/94-7/2000 | | NRHS |
| 9913 | CMDX | CARGILL, INC. | | | PWRC |
| 9914 | CMDX | Cargill | | | RSRV |
| 9915 | CMDX | CARGILL, INC. | | | SCAC4 |
| 9916 | CMDY | C & M TRANSPORTATION SERVICES | | | SCAC4 |
| 9917 | CME | Prince Edward Air Ltd. | Callsign: Comet, Operations transferred to SkyLink Express Inc on 01 November 2010. | CDN | AVCODES |
| 9918 | CME | Air Camelot | Callsign: Camelot, | GB | AVCODES |
| 9919 | CME | Commerce Bank | Callsign: Commerce Bank, | USA | AVCODES |
| 9920 | CME | Prince Edward Air | | | ICAO1 |
| 9921 | CMEA | C & M EXPRESS INC | | | SCAC3 |
| 9922 | CMEB | CORMIER & EBONY TRUCKING INC | | | SCAC3 |
| 9923 | CMEC | COMMERCIAL TRUCKING COMPANY INC | | | SCAC3 |
| 9924 | CMEC | CLARK MOTOR EXPRESS CANADA | | | SCAC4 |
| 9925 | CMED | CAL-METRO DISTRIBUTING CO | | | SCAC3 |
| 9926 | CMED | CAL METRO DISTRIBUTING CO INC | | | SCAC4 |
| 9927 | CMED | Cumerio-Med AG / Кумерио Мед АД | | BG | VKM |
| 9928 | CMEE | COMMODORE EXPRESS INC | | | SCAC4 |
| 9929 | CMEH | C M R EXPRESS | | | SCAC4 |
| 9930 | CMEI | COMMERCIAL MOTOR SERVICE | | | SCAC3 |
| 9931 | CMEI | CENTRAL METAL INC | | | SCAC4 |
| 9932 | CMEJ | CHAMBERS, JACK W | | | SCAC3 |
| 9933 | CMEK | CENTRAL MACHINE AND MARINE INC | | | SCAC4 |
| 9934 | CMEL | CAROLINA MOTOR EXPRESS LINES, INC | | | SCAC3 |
| 9935 | CMEL | COMET INTERNATIONAL CONTAINER LINES | | | SCAC4 |
| 9936 | CMEO | CALIFORNIA MOTOR EXPRESS LTD | | | SCAC3 |
| 9937 | CMEO | CAMEO CONVERTIBLES LTEE | | | SCAC4 |
| 9938 | CMEP | CONTINENTAL MARINE SERVICE INC | | | SCAC3 |
| 9939 | CMEQ | CROMER ENTERPRISES | | | SCAC3 |
| 9940 | CMEQ | CME EQUIPMENT TRANSPORT LLC | | | SCAC4 |
| 9941 | CMER | Curtis, Milburn and Eastern R.R. Co. | added 1/1976; 1/1980; eliminated 10/1990 | | NAKINA |
| 9942 | CMER | Curtis, Milburn and Eastern R.R. Co. | 1/80; eliminated 10/90 | | NRHS |
| 9943 | CMER | CURTIS MILBURN & EASTERN RAILROAD CO. | | | PWRC |
| 9944 | CMER | Curtis, Milburn and Eastern Railroad | | | RSRV |
| 9945 | CMER | CARMICHAE | | | SCAC4 |
| 9946 | CMES | CAMEL SERVICE COMPANY | | | SCAC3 |
| 9947 | CMET | CENTRAL MOTOR EXPRESS INC | | | SCAC3 |
| 9948 | CMEU | SPARTANK SP. Z.O.O | | PL | BIC |
| 9949 | CMEU | CENAM | | | SCAC3 |
| 9950 | CMEU | CENAM | | | SCAC4 |
| 9951 | CMEV | CHEETAH MESSENGER SERVICE INC | | | SCAC3 |
| 9952 | CMEW | COLORADO MOUNTAIN EXPRESS INC | | | SCAC3 |
| 9953 | CMEW | C M C EXPRESS COURIER INC | | | SCAC4 |
| 9954 | CMEX | Cemex, Inc. | added 7/2005; 7/2005 | | NAKINA |
| 9955 | CMEX | CEMEX, INC. | | | PWRC |
| 9956 | CMEX | CEMEX | | | RSRV |
| 9957 | CMEX | CEMEX INC | | | SCAC4 |
| 9958 | CMEY | COMMERCE EXPRESS INC | | | SCAC3 |
| 9959 | CMEY | COMMERC | | | SCAC4 |
| 9960 | CMF | Air Care Alliance | Callsign: Compassion, | USA | AVCODES |
| 9961 | CMF | Air Care Alliance | | | ICAO1 |
| 9962 | CMFA | C & M FARMS | | | SCAC3 |
| 9963 | CMFB | COMMERCIAL FABRICS INC | | | SCAC4 |
| 9964 | CMFC | C&M FORWARDING CO | | | SCAC3 |
| 9965 | CMFC | C & M FORWARDING COMPANY INC | | | SCAC4 |
| 9966 | CMFD | CUMBERLAND FARMS DAIRY INC | | | SCAC3 |
| 9967 | CMFD | CUMBERLAND FARMS INC | | | SCAC4 |
| 9968 | CMFE | CORDIN MOTOR FREIGHT INC | | | SCAC3 |
| 9969 | CMFF | CAN-AM FREIGHT FORWARDING CORP | | | SCAC4 |
| 9970 | CMFG | COMMERCIAL FREIGHT CARRIERS INC | | | SCAC3 |
| 9971 | CMFG | CONNECTOR MANUFACTURING CO | | | SCAC4 |
| 9972 | CMFH | CHALLENGER MOTOR FREIGHT, INC | | | SCAC3 |
| 9973 | CMFH | CHALLENGER MOTOR FREIGHT INC | | | SCAC4 |
| 9974 | CMFI | CHEM-FREIGHT INC | | | SCAC3 |
| 9975 | CMFK | CMS FORWARDING | | | SCAC3 |
| 9976 | CMFK | CMEREK SUPPLY INC | | | SCAC4 |
| 9977 | CMFL | CANADA TRAILERS MANUFACTURING | | | SCAC4 |
| 9978 | CMFM | CMF TRUCKING INC | | | SCAC3 |
| 9979 | CMFM | CAMERON FAMILY TRUCKING LLC | | | SCAC4 |
| 9980 | CMFN | CHALLENGER MOTOR FREIGHT (U S) INC | | | SCAC3 |
| 9981 | CMFN | CARMI FLAVOR & FRAGRANCE CO INC | | | SCAC4 |
| 9982 | CMFO | CAL-MAINE FOODS INC | | | SCAC4 |
| 9983 | CMFP | CAPITOL MOTOR FREIGHT EXPRESS INC | | | SCAC3 |
| 9984 | CMFQ | CAMPBELL TRANSFER AND STORAGE CO | | | SCAC3 |
| 9985 | CMFR | CONSOLIDATED MOTOR FREIGHT, INC | | | SCAC3 |
| 9986 | CMFT | CHICAGO MOTOR FREIGHT INC | | | SCAC3 |
| 9987 | CMFU | CMF, CHENE-CHENU | | | SCAC3 |
| 9988 | CMFV | CONSTRUCTION MATERIAL FLEET SERVICE | | | SCAC3 |
| 9989 | CMFV | CUSTOM FARM SERVICES INC | | | SCAC4 |
| 9990 | CMFW | CARDENAS MARKETS INC | | | SCAC4 |
| 9991 | CMFX | CMF LEASING INC | | | SCAC4 |
| 9992 | CMFY | CROSS METRO EXPRESS INC | | | SCAC4 |
| 9993 | CMG | Comet Airlines Limited | Callsign: Sunspy, | WAN | AVCODES |
| 9994 | CMG | Comet Airlines | | | ICAO1 |
| 9995 | CMG | CHICAGO MILWAUKEE & GARY | | | PWRC |
| 9996 | CMG | Chicago, Milwaukee and Gary Railway | | | RSRV |
| 9997 | CMGA | COMMERCE MOVING & STORAGE INC | | | SCAC3 |
| 9998 | CMGA | COMMERCE MOVING & STORAGE INC | | | SCAC4 |
| 9999 | CMGC | COMPUTER MOVING CO, THE | | | SCAC3 |
| 10000 | CMGC | CAMBRIDGE RIGGING CENTRAL LIMITED | | | SCAC4 |
