| 1 | LDA | Lauda Air Luftfahrt AG | IATA: NG, Callsign: Lauda Air, IATA Prefix: 231, Merged into Austrian Airlines. IATA Designator changed from LW | A | AVCODES |
| 2 | LDA | Lauda Air Luftfahrt AG | IATA: LW, Callsign: Lauda Air, IATA Designator changed to NG. IATA Designator changed from OE | A | AVCODES |
| 3 | LDA | Lauda Europe Ltd. | IATA: LW, Callsign: Beaufort, Ryanair Holdings Group | M | AVCODES |
| 4 | LDA | Lauda Air | IATA: NG | | ICAO1 |
| 5 | LDAA | LEE, DAVID ALAN | | | SCAC4 |
| 6 | LDAC | LANDAIR INTERNATIONAL INC | | | SCAC4 |
| 7 | LDAD | LAKELAND DELIVERY SERVICE INC | | | SCAC4 |
| 8 | LDAE | LAND/AIRE INC | | | SCAC3 |
| 9 | LDAG | LANDIS, D A TRUCKING INC | | | SCAC4 |
| 10 | LDAH | LOEW DEMERS AUCTIONS INC | | | SCAC4 |
| 11 | LDAK | LIL DANAS TRUCKING INC | | | SCAC3 |
| 12 | LDAL | LAND SEA AIR INCORPORATED | | | SCAC4 |
| 13 | LDAM | LEDA MARINE S A | | | SCAC3 |
| 14 | LDAO | LANDSTAR TRANSPORTATION SERVICE INC | | | SCAC3 |
| 15 | LDAO | LOADMASTERS | | | SCAC4 |
| 16 | LDAP | L & D TRANSPORT SERVICES LLC | | | SCAC4 |
| 17 | LDAQ | LINCOLN-DIXIE FREIGHT LINES, A L | | | SCAC3 |
| 18 | LDAR | LAND AND RAIL TRANSPORTATION INC | | | SCAC3 |
| 19 | LDAR | LES DISTRIBUTIONS A & R | | | SCAC4 |
| 20 | LDAS | L & D AERO SERVICE | | | SCAC3 |
| 21 | LDAS | LEKKER SEWING S DE RL DE | | | SCAC4 |
| 22 | LDAT | LAIRD, D A TRANSPORT INC | | | SCAC4 |
| 23 | LDAX | Louisiana Agricultural Finance Authority | 7/2000-7/2005 (not listed) | | NAKINA |
| 24 | LDAX | Louisiana Agricultural Finance Authority | Jul-00 | | NRHS |
| 25 | LDAX | LOUISIANA AGRICULTURAL FINANCE AUTHORITY | | | PWRC |
| 26 | LDAX | Louisiana Agricultural Finance Authority | | | RSRV |
