| 1 | JLS | Jet Alsace | Callsign: Jet Alsace, Ceased operations | F | AVCODES |
| 2 | JLS | Jet Line STP | | STP | AVCODES |
| 3 | JLSA | J L S TRANSPORTATION INC | | | SCAC4 |
| 4 | JLSB | JLSC EDUCATIONAL TOUR BUS INC | | | SCAC4 |
| 5 | JLSC | JASPER LEASING CO INC | | | SCAC4 |
| 6 | JLSI | JUTUL SHIPPING S A | | | SCAC4 |
| 7 | JLSJ | JASSO LOGISTICS SA DE CV | | | SCAC4 |
| 8 | JLSN | JL SONS | | | SCAC4 |
| 9 | JLSR | J & L SERVICES INC | | | SCAC4 |
| 10 | JLST | JLS TRUCKING LLC | | | SCAC4 |
| 11 | JLSU | JAPAN LINE, LTD. | | | PWRC |
| 12 | JLSU | Japan Line | | | RSRV |
| 13 | JLSX | Jones & Laughlin Steel Corp. | 7/1932-10/1966; eliminated 1/1970 | | NAKINA |
| 14 | JLSX | Jones & Laughlin Steel Corp. | 4/38-10/66; eliminated 1/70 | | NRHS |
| 15 | JLSX | JONES & LAUGHLIN STEEL CORP. | | | PWRC |
| 16 | JLSZ | JAPAN LINE, LTD. | | | PWRC |
| 17 | JLSZ | Japan Line | | | RSRV |
| 18 | JLSZ | JAPAN LINE, LTD. | | | SCAC4 |
