| 1 | COH | Coltishall FTU | Callsign: Colt, | GB | AVCODES |
| 2 | COH | Coltishall Flying Training Unit | | | ICAO1 |
| 3 | COHA | COACH LOGISTICS INCORPORATED | | | SCAC4 |
| 4 | COHB | CORNETT, HERBERT H | | | SCAC3 |
| 5 | COHC | COHENS CONTAINER CORP | | | SCAC3 |
| 6 | COHD | COLE HERSEE CO | | | SCAC3 |
| 7 | COHE | COHO TRANSPORT | | | SCAC3 |
| 8 | COHE | COHESION FREIGHT (HK) LIMITED | | | SCAC4 |
| 9 | COHF | COBRA HAULAGE CORP | | | SCAC3 |
| 10 | COHG | COHEN, LOUIS & SON INC | | | SCAC3 |
| 11 | COHG | CORREA HAULING LLC | | | SCAC4 |
| 12 | COHH | CENTRAL OHIO SHIPPERS | | | SCAC3 |
| 13 | COHI | CINCINNATI TRUCKING INC | | | SCAC3 |
| 14 | COHJ | CENTRAL OHIO TRANSIT AUTHORITY | | | SCAC3 |
| 15 | COHL | COSMOS HOLDINGS LIMITED | | | SCAC3 |
| 16 | COHM | CORNHUSKER MOTOR LINES INC | | | SCAC3 |
| 17 | COHN | COHENNO INC | | | SCAC3 |
| 18 | COHP | COHEN & POWELL, INCORPORATED | | | SCAC3 |
| 19 | COHP | COLUMBIA HELICOPTERS INC | | | SCAC4 |
| 20 | COHQ | CORNHUSKER CARTAGE | | | SCAC3 |
| 21 | COHR | COOPER HORSE TRANSPORTATION INC | | | SCAC4 |
| 22 | COHT | COHANSEY TRANSPORT | | | SCAC3 |
| 23 | COHU | FLORENS CONTAINER SERVICES CO | | | SCAC4 |
| 24 | COHV | COVEY HEAVY HAULING | | | SCAC3 |
| 25 | COHX | *CITY OF HENDERSON | | | PWRC |
| 26 | COHX | +CHEASPEAKE & OHIO HISTORICAL SOCIETY, INC. | | | PWRC |
| 27 | COHX | CHESAPEAKE & OHIO HISTORICAL SOCIET | | | SCAC4 |
| 28 | COHY | COHEY TRUCKING COMPANY | | | SCAC3 |
| 29 | COHY | CONLEY TRANSPORT | | | SCAC4 |
| 30 | COHZ | COCHRAN | | | PWRC |
