| 1 | LEF | E Fly Co. Ltd. | IATA: LE, Callsign: Lalena, Ceased operations on 05 November 2009. Founded in 2009 | M | AVCODES |
| 2 | LEF | Lake Erie, Franklin & Clarion R.R. Co. | 8/1920-1/1994; eliminated 4/1995 | | NAKINA |
| 3 | LEF | Lake Erie, Franklin & Clarion R.R. Co. | 4/38-1/94; eliminated 4/95 | | NRHS |
| 4 | LEF | Lugauer Eisenbahnfreunde e.V. | Lugau | D | privat-bahn.de |
| 5 | LEF | LAKE ERIE, FRANKLIN & CLARION RAILROAD CO. | | | PWRC |
| 6 | LEF | Lake Erie, Franklin and Clarion Railroad | | | RSRV |
| 7 | LEF | Lake Erie, Franklin & Clarion Railroad Company | | USA | TRAFFIC |
| 8 | LEFA | LEFFEL, SCOTT TRUCKING | | | SCAC4 |
| 9 | LEFB | LE FEBVRE & SONS INC | | | SCAC3 |
| 10 | LEFC | LAKE ERIE, FRANKLIN & CLARION RAILROAD CO. | | | PWRC |
| 11 | LEFE | LEFEBVRE & SONS INC | | | SCAC4 |
| 12 | LEFF | LEFFLER TRANSPORTATION CO | | | SCAC3 |
| 13 | LEFG | LEONARD FEED & GRAIN INC | | | SCAC3 |
| 14 | LEFH | LEAS TRANPORT | | | SCAC4 |
| 15 | LEFI | LES ENTREPRISES FELONISES INC | | | SCAC3 |
| 16 | LEFK | LEFKO, JOHN TRUCKING | | | SCAC3 |
| 17 | LEFN | LEADFREE ENTERPRISES INCORPORATED | | | SCAC3 |
| 18 | LEFN | LES INDUSTRIES FERMCO LTEE | | | SCAC4 |
| 19 | LEFO | LE FEVRE CORP | | | SCAC3 |
| 20 | LEFO | LES ENTREPRISES FORESTIERES ETCHEMI | | | SCAC4 |
| 21 | LEFP | LEAD TRUCKING | | | SCAC4 |
| 22 | LEFQ | LEE FREIGHT INC | | | SCAC3 |
| 23 | LEFR | LEFROY INTERNATIONAL INC | | | SCAC4 |
| 24 | LEFT | LEAF TRANSPORTATION INC | | | SCAC3 |
| 25 | LEFW | Lake Erie & Fort Wayne R.R. Co. | 1/1975-1/1980 | | NAKINA |
| 26 | LEFW | Lake Erie & Fort Wayne R.R. Co. | 1/75-1/80 | | NRHS |
| 27 | LEFW | LAKE ERIE & FORT WAYNE RAILROAD | | | PWRC |
| 28 | LEFX | Greenville Leasing Co. (temporary) | 1/1994-7/2000 (not listed) | | NAKINA |
| 29 | LEFX | Greenville Leasing Co. (temporary) | 1/94-7/2000 | | NRHS |
| 30 | LEFX | GREENVILLE LEASING CO. (TEMPORARY ASSIGNMENT) | | | PWRC |
| 31 | LEFX | GREENVILLE LEASING COMPANY (TEMPORARY ASSIGNMENT) | | | PWRC |
| 32 | LEFX | Greenville Leasing | | | RSRV |
