| 1 | LOS | Lossiemouth FTU | Callsign: Lossie, | GB | AVCODES |
| 2 | LOS | Lossiemouth Flying Training Unit | | | ICAO1 |
| 3 | LOSA | LOS ALAMOS TRANSFER COMPANY | | | SCAC3 |
| 4 | LOSB | L O S T DOODLEBUG | | | SCAC3 |
| 5 | LOSD | LOUX & SON DRAYAGE | | | SCAC3 |
| 6 | LOSE | LOUISVILLE-SHELBYVILLE EXPRESS INC | | | SCAC3 |
| 7 | LOSG | LEOS TRUCKING | | | SCAC3 |
| 8 | LOSG | LIBERTY ONE SHIPMANAGEMENT GMBH & C | | | SCAC4 |
| 9 | LOSH | LEADER OCEAN SHIPPING LINE | | | SCAC3 |
| 10 | LOSH | LOS HUESOS TRUCKING | | | SCAC4 |
| 11 | LOSI | LONE STAR TRANSFER & STORAGE INC | | | SCAC3 |
| 12 | LOSK | LOS GORDOS TRUCKING | | | SCAC4 |
| 13 | LOSL | LOISELLE TRANSPORTATION | | | SCAC3 |
| 14 | LOSP | LYBRA OVERSEAS SHIPPING | | | SCAC4 |
| 15 | LOSR | LOS ROBLES TRUCKING | | | SCAC4 |
| 16 | LOST | LOISELLE TRANSPORT INC | | | SCAC3 |
| 17 | LOSTR | LOSTR a.s. | | CZ | VKM |
| 18 | LOSU | EMERSON CLIMATE TECHNOLOGIES | | DK | BIC |
| 19 | LOSU | YORK REFRIGERATION MARINE AND CONTR | | | SCAC4 |
| 20 | LOSV | LOS TRANSFER AND STORAGE | | | SCAC3 |
| 21 | LOSW | LOS WAGES TRANSPORT LTD | | | SCAC4 |
| 22 | LOSX | Locomotive Specialist Inc. | 7/2000-7/2005 (not listed) | | NAKINA |
| 23 | LOSX | Los Angeles Soap Co. | 7/1930-4/1961; eliminated 10/1963 | | NAKINA |
| 24 | LOSX | Los Angeles Soap Co. | 4/38-4/61 | | NRHS |
| 25 | LOSX | Locomotive Specialist Inc. | Jul-00 | | NRHS |
| 26 | LOSX | *LOS ANGELES SOAP CO. | | | PWRC |
| 27 | LOSX | *LONE STAR RAILROAD, INC. | | | PWRC |
| 28 | LOSX | +LOCOMOTIVE SPECIALISTS INC. | | | PWRC |
| 29 | LOSX | Locomotive Specialists | | | RSRV |
