| 7001 | CHSR | Chillicothe Southern R.R. Co. | added 4/1986; eliminated 10/1987 | | NAKINA |
| 7002 | CHSR | Chillicothe Southern R.R. Co. | added 4/86; eliminated 10/87 | | NRHS |
| 7003 | CHSR | CHILLICOTHE SOUTHERN RAILROAD | | | PWRC |
| 7004 | CHSS | CHASE TRUCKING | | | SCAC3 |
| 7005 | CHST | CHESTER CARRIERS INC | | | SCAC3 |
| 7006 | CHST | CHESTER CARRIERS INC | | | SCAC4 |
| 7007 | CHSU | CHS CONTAINER HANDEL GMBH | | D | BIC |
| 7008 | CHSU | BRAMBLES CONTAINER SERVICES | | | SCAC3 |
| 7009 | CHSU | GUP CHAO CHUKTOSNAB | | | SCAC4 |
| 7010 | CHSW | CHELSEA STORAGE WAREHOUSE CORP | | | SCAC3 |
| 7011 | CHSX | CHS Inc. | added 4/2007 | | NAKINA |
| 7012 | CHSX | Cenex Harvest States Cooperative | added 4/1999; 7/2000-7/2005; eliminated 4/2007 | | NAKINA |
| 7013 | CHSX | Thomas Chestnut | 7/1923 | | NAKINA |
| 7014 | CHSX | Cenex Harvest States Cooperative | added 4/99; 7/2000 | | NRHS |
| 7015 | CHSX | *THOMAS CHESTNUT | | | PWRC |
| 7016 | CHSX | *CARBON SCHUYKILL | | | PWRC |
| 7017 | CHSX | +CHS INC. [CENEX HARVEST STATES COOPERATIVE] | | | PWRC |
| 7018 | CHSX | Cenex Harvest States Cooperative | | | RSRV |
| 7019 | CHSX | CHASE LEASING CO | | | SCAC3 |
| 7020 | CHSX | CHS INC | | | SCAC4 |
| 7021 | CHSX | Cenex Harvest States Cooperative | | USA | TRAFFIC |
| 7022 | CHSY | CHAMSY TRANSFER INC | | | SCAC3 |
| 7023 | CHSZ | *CITY OF HOT SPRINGS | | | PWRC |
| 7024 | CHSZ | *INTERMODAL SERVICES, INC. | | | PWRC |
| 7025 | CHSZ | City of Hot Springs (Intermodal Services Inc.) | | | RSRV |
| 7026 | CHSZ | INTERMODAL SERVICES, INC. | | | SCAC4 |
| 7027 | CHT | CHATTANOOGA TRACTION COMPANY | | | PWRC |
| 7028 | CHTA | CHUTAUGUQ STORAGE & TRANSFER COMPAN | | | SCAC3 |
| 7029 | CHTC | CHATHAM TERMINAL COMPANY | | | PWRC |
| 7030 | CHTC | CHALLIS TRANSPORTATION CO INC | | | SCAC3 |
| 7031 | CHTC | CHAMPION TARGET COMPANY | | | SCAC4 |
| 7032 | CHTD | CHENEY TRUCKING COMPANY | | | SCAC3 |
| 7033 | CHTD | CHARTERAD ENTERPRISES LTD | | | SCAC4 |
| 7034 | CHTE | CHASSILORS TERMINAL TRUCKING INC | | | SCAC3 |
| 7035 | CHTE | CHASSILORS TERMINAL TUCKING INC | | | SCAC4 |
| 7036 | CHTF | CHATFIELD TRUCKING INC | | | SCAC3 |
| 7037 | CHTG | CHRISTISON TRUCKING | | | SCAC3 |
| 7038 | CHTG | CHURCHILL TRANSPORT GROUP INC | | | SCAC4 |
| 7039 | CHTH | CHATTAHOOCHEE INDUSTRIAL RAILROAD | | | SCAC3 |
| 7040 | CHTH | CHALIA TRANSPORT | | | SCAC4 |
| 7041 | CHTK | CHETS TRANSPORT, INC | | | SCAC3 |
| 7042 | CHTL | CHURCHILL TRUCK LINES INC | | | SCAC3 |
| 7043 | CHTL | CHTL LOGISTICS LLC (DIV CLAY HYDER | | | SCAC4 |
| 7044 | CHTLT | Chládek & Tintěra, a.s. | | CZ | VKM |
| 7045 | CHTM | CHATHAM EXPRESS | | | SCAC3 |
| 7046 | CHTM | CHEMTOOL INC | | | SCAC4 |
| 7047 | CHTN | CHATTERTON-TRUDEL EXPRESS CO | | | SCAC3 |
| 7048 | CHTO | CHAPARRAL TRANSPORTATION COMPANY | | | SCAC3 |
| 7049 | CHTO | CATRACHO TRANSPORT INC | | | SCAC4 |
| 7050 | CHTP | CHASE TRANSPORTATION INC | | | SCAC3 |
| 7051 | CHTP | CHICAGOTRANS ENTERPRISES INC | | | SCAC4 |
| 7052 | CHTQ | CHAPMAN TRUCK LINE | | | SCAC3 |
| 7053 | CHTR | CHARLESTON TRANSFER | | | SCAC3 |
| 7054 | CHTR | CHASE TRANSPORT BROKERAGE LLC | | | SCAC4 |
| 7055 | CHTS | East Penn Railroad LLC | added 10/2007 | | NAKINA |
| 7056 | CHTS | Penn Eastern Rail Lines Inc. | added 4/1998; 7/2000-7/2005; eliminated 10/2007 | | NAKINA |
| 7057 | CHTS | Penn Eastern Rail Lines Inc. | added 4/98; 7/2000 | | NRHS |
| 7058 | CHTS | EAST PENN RAILROAD (PENN EASTERN RAIL LINES INC.) [CHESTER VALLEY RAILROAD] | | | PWRC |
| 7059 | CHTS | Chester Valley Railroad (Penn Eastern Rail Lines) | | | RSRV |
| 7060 | CHTSTU | Chernivtsi Trolleybus Managemen | City: Chernivtsi | UA | TRAFFIC |
| 7061 | CHTT | Union Pacific Ry. Co. | added 4/1997; 7/2000-7/2005 | | NAKINA |
| 7062 | CHTT | Missouri Pacific System | added 4/1981; 1/1994; eliminated 4/1997 | | NAKINA |
| 7063 | CHTT | Chicago Heights Terminal Transfer R.R. Co. | 1/1975-1/1980 | | NAKINA |
| 7064 | CHTT | Chicago Heights Terminal Transfer R.R. Co. | 1/75-1/80 | | NRHS |
| 7065 | CHTT | Missouri Pacific System | added 4/81; 1/94; eliminated 4/97 | | NRHS |
| 7066 | CHTT | Union Pacific Ry. Co. | added 4/97; 7/2000 | | NRHS |
| 7067 | CHTT | UP [MISSOURI PACIFIC] [CHICAGO HEIGHTS TERMINAL TRANSFER RR] | | | PWRC |
| 7068 | CHTT | Chicago Heights Terminal Transfer Railroad (Union Pacific Railroad) | | | RSRV |
| 7069 | CHTT | CHICAGO HEIGHTS TERMINAL TRANSFER R | | | SCAC3 |
| 7070 | CHTT | Chicago Heights Transfer Terminal | | USA | TRAFFIC |
| 7071 | CHTU | COHERENT BOX INDUSTRY CO., LTD | | HK | BIC |
| 7072 | CHTU | CHT GMBH | | | SCAC4 |
| 7073 | CHTV | CHARLSEN TRUCKING SERVICE INC | | | SCAC3 |
| 7074 | CHTV | CHTL TRUCKING LLC | | | SCAC4 |
| 7075 | CHTW | CHETS TOW SERVICE INC | | | SCAC3 |
| 7076 | CHTX | Conshohocken Rail LLC | eliminated 4/2008 | | NAKINA |
| 7077 | CHTX | Charlotte Refining Co. | 1/1952 | | NAKINA |
| 7078 | CHTX | Charlotte Refining Co. | Jan-52 | | NRHS |
| 7079 | CHTX | CHARLOTTE REFINING CO. | | | PWRC |
| 7080 | CHTY | CLARK, HERBERT TRUCKING CO | | | SCAC3 |
| 7081 | CHTY | CHA TRUCKING | | | SCAC4 |
| 7082 | CHU | Church Aircraft Ltd | Callsign: Churchair, | USA | AVCODES |
| 7083 | CHU | Church Aircraft | | | ICAO1 |
| 7084 | CHUC | CHILLING RESOURCES | | | SCAC4 |
| 7085 | CHUD | CORNHUSKER DISTRIBUTION SERVICES LL | | | SCAC4 |
| 7086 | CHUE | CALHOUN ENTERPRISES | | | SCAC3 |
| 7087 | CHUE | CHALLENGER TRUCKING | | | SCAC4 |
| 7088 | CHUF | C AND H TRUCKING LLC | | | SCAC4 |
| 7089 | CHUG | CHIUS TRUCKING CO | | | SCAC3 |
| 7090 | CHUG | CHANDE TRUCKING | | | SCAC4 |
| 7091 | CHUH | CHURCHILL TRANSPORTATION INC | | | SCAC3 |
| 7092 | CHUI | CHURCHES TRUCKING INC | | | SCAC3 |
| 7093 | CHUI | CHEETAH TRUCKING INC | | | SCAC4 |
| 7094 | CHUJ | CHEURCO, JAMES A | | | SCAC3 |
| 7095 | CHUJ | CHEURCO, JAMES A | | | SCAC4 |
| 7096 | CHUL | CREST HAULAGE, INC | | | SCAC3 |
| 7097 | CHUM | CHURCH ST TRUCKING CO INC | | | SCAC3 |
| 7098 | CHUM | CHUMWAY EXPRESS | | | SCAC4 |
| 7099 | CHUN | CHAUVIN, LOUIS H INC | | | SCAC3 |
| 7100 | CHUN | COSCO HUNAN | | | SCAC4 |
