| 1 | LDR | Aero Lider, S.A. de C.V. | Callsign: Aerolider, | MEX | AVCODES |
| 2 | LDR | Aero Lider | | | ICAO1 |
| 3 | LDRC | LOADER CONSTRUCTION | | | SCAC3 |
| 4 | LDRI | LEGEND TRANSPORTATION INC | | | SCAC3 |
| 5 | LDRK | LAUDER TRUCKING INC | | | SCAC3 |
| 6 | LDRL | LANDSTAR T.L.C., INC. | | | SCAC1 |
| 7 | LDRN | LODE RUNNER | | | SCAC3 |
| 8 | LDRN | LODERUNNER | | | SCAC4 |
| 9 | LDRO | LEADER LOGISTICS INC | | | SCAC4 |
| 10 | LDRP | LEADER TRANSPORTATION INC | | | SCAC3 |
| 11 | LDRR | Louisiana & Delta R.R., Inc. | added 7/1987; 1/1994-7/2000; eliminated 7/2003; 7/2005 | | NAKINA |
| 12 | LDRR | Louisiana & Delta R.R., Inc. | added 7/87; 1/94-7/2000 | | NRHS |
| 13 | LDRR | LOUISIANA & DELTA RAILROAD, INC. | | | PWRC |
| 14 | LDRR | Louisiana and Delta Railroad | | | RSRV |
| 15 | LDRR | LOUISIANA & DELTA RAILROAD INC | | | SCAC3 |
| 16 | LDRR | LOUISIANA & DELTA RAILROAD INC | | | SCAC4 |
| 17 | LDRS | L D R TRANSPORT INC | | | SCAC3 |
| 18 | LDRS | LEADER SERVICES INC | | | SCAC4 |
| 19 | LDRT | The Lake Front Dock & R.R. Terminal Co. | 1/1975-1/1994 | | NAKINA |
| 20 | LDRT | The Lake Front Dock & R.R. Terminal Co. | 1/75-1/94 | | NRHS |
| 21 | LDRT | RETIRED 01-28-93 ATP (407) [LAKE FRONT DOCK & RAILROAD TERMINAL CO.] | | | PWRC |
| 22 | LDRT | Lake Front Dock and Railroad Terminal | | | RSRV |
| 23 | LDRT | LAKEFRONT DOCK AND RAILROAD TERMINA | | | SCAC3 |
| 24 | LDRT | LINE-DRIVE TRANSPORTATION INC | | | SCAC4 |
| 25 | LDRU | TURKEY RUSSIA LOGISTICS CORPORATION | | TR | BIC |
| 26 | LDRX | LOCODOCS, INC. | | | PWRC |
| 27 | LDRX | LOCODOCS INC | | | SCAC4 |
| 28 | LDRY | LANDRY, DURK TRUCKING LLC | | | SCAC4 |
