| 1 | CIC | ICC International Cargo Charters Canada Ltd.. d/b/a ICC Canada Ltd. | Callsign: Air Trader, | CDN | AVCODES |
| 2 | CIC | Celtic Airways Ltd. | Callsign: Celtic, | GB | AVCODES |
| 3 | CIC | ICC Canada | | | ICAO1 |
| 4 | CIC | Cedar Rapids and Iowa City Ry. Co. | 4/1938-7/2005 | | NAKINA |
| 5 | CIC | Cedar Rapids and Iowa City Ry. Co. | 4/38-7/2000 | | NRHS |
| 6 | CIC | CEDAR RAPIDS & IOWA CITY RAILWAY COMPANY (CRANDIC) | | | PWRC |
| 7 | CIC | Cedar Rapids and Iowa City Railway (Crandic) | | | RSRV |
| 8 | CICA | CISA SA | | CH | VKM |
| 9 | CICB | CITRANS CORP, THE | | | SCAC3 |
| 10 | CICC | CIAPUSCI, CHARLES A | | | SCAC3 |
| 11 | CICD | CICIONI, ALFRED J | | | SCAC3 |
| 12 | CICE | COMICAGE ENTERTAINMENT | | | SCAC4 |
| 13 | CICF | CICIONI, FRANK C | | | SCAC3 |
| 14 | CICH | COMBITRANS CONSOLIDATORS INC | | | SCAC4 |
| 15 | CICI | CENTRAL INDIANA CARTAGE | | | SCAC3 |
| 16 | CICI | CENTRAL ILLINOIS CARRIERS INC | | | SCAC4 |
| 17 | CICJ | CRUISE-IN-COMFORT INC | | | SCAC3 |
| 18 | CICJ | CANDO CONTRACTING INC | | | SCAC4 |
| 19 | CICK | CIRCLE C TRUCK LINES INC | | | SCAC3 |
| 20 | CICM | CHI-CAN TRANSPORT LTEE | | | SCAC3 |
| 21 | CICM | CHAMPION COACH INC | | | SCAC4 |
| 22 | CICN | CALSSIC BULK CARRIERS INC | | | SCAC4 |
| 23 | CICO | CICIO TRUCKING CO INC | | | SCAC3 |
| 24 | CICP | CAPRICORNIO TRANSPORT S.A | | | SCAC3 |
| 25 | CICQ | CIRCLE TRANSPORT INC | | | SCAC3 |
| 26 | CICR | CLIFTON IRON COMPANY RAILROAD | | | PWRC |
| 27 | CICR | CONTINENTAL CARRIERS INC | | | SCAC4 |
| 28 | CICS | CHEMICAL SERVICES CORP | | | SCAC3 |
| 29 | CICT | CIRCLE C TRANSPORTATION COMPANY | | | SCAC3 |
| 30 | CICU | CIMC CONTAINERS HOLDING COMPANY LTD | | PRC | BIC |
| 31 | CICU | CIE IMMOBILIERE & COMMERCE | | | SCAC3 |
| 32 | CICU | CHINA INTERNATIONAL MARINE CONTAINE | | | SCAC4 |
| 33 | CICV | CICALESE, VINCENT J | | | SCAC3 |
| 34 | CICV | CATTLE RIDE TRANSPORT | | | SCAC4 |
| 35 | CICW | CAMELI INTERNATIONAL AND CO. N V | | | SCAC3 |
| 36 | CICY | CIRCLE CITY TRANSPORT INC | | | SCAC3 |
