| 1 | JAC | Japan Air Commuter Co. Ltd. | IATA: 3X, Callsign: Commuter, IATA designator changed to JC. | J | AVCODES |
| 2 | JAC | Japan Air Commuter Co. Ltd. | IATA: JC, Callsign: Commuter, IATA designator changed from 3X. | J | AVCODES |
| 3 | JAC | Japan Air Commuter | | | ICAO1 |
| 4 | JACC | JACKSON CARTAGE CO | | | SCAC1 |
| 5 | JACEK | PPHU Jacek Surdyk | | PL | VKM |
| 6 | JACF | J A C 'S EXPRESS LIMITED LIABILITY | | | SCAC4 |
| 7 | JACH | JAC | | | SCAC4 |
| 8 | JACI | JACINTO TRANSPORT | | | SCAC4 |
| 9 | JACJ | JTI TRANSPORTATION INC | | | SCAC4 |
| 10 | JACL | JACQUIN, CHARLES ET CIE INC | | | SCAC4 |
| 11 | JACN | JACOBSON TRANSPORT INC | | | SCAC4 |
| 12 | JACO | JACKSON, H L & SON | | | SCAC4 |
| 13 | JACS | JACKS TRUCKING LLC | | | SCAC4 |
| 14 | JACT | J A C TRUCKING LLC | | | SCAC4 |
| 15 | JACU | ALPHA SHIPPING AGENCY (PTY) LTD | | ZA | BIC |
| 16 | JACV | JACKSON OIL AND SOLVENTS INC | | | SCAC4 |
| 17 | JACW | JACOBSON, W TRUCKING | | | SCAC4 |
| 18 | JACX | Johnstown America Corp. | added 7/1992; 1/1994-7/2005 | | NAKINA |
| 19 | JACX | Johnstown America Corp. | added 7/92; 1/94-7/2000 | | NRHS |
| 20 | JACX | JOHNSTOWN AMERICA CORPORATION | | | PWRC |
| 21 | JACX | Johnstown America Corporation | | | RSRV |
| 22 | JACX | JOHNSTOWN AMERICA CORPORATION | | | SCAC4 |
| 23 | JACY | JASON MARITIME INC | | | SCAC4 |
