| 1 | LZ | Belle Air Company | ICAO: LBY, Callsign: Alban-Belle, Ceased operations on 25 November 2013. IATA designator changed from LB. | AL | AVCODES |
| 2 | LZ | Swiss Global Air Lines AG | ICAO: SWU, Callsign: Euroswiss, Merged into Swiss International Air Lines on 19 April 2018. Name changed from Swiss European Air Lines AG w.e.f 03 February 2015. Founded in 2005. | CH | AVCODES |
| 3 | LZ | Air Link Pty Ltd. | | AUS | AVCODES |
| 4 | LZA | Lanza Air, S.L. | Callsign: Aerolanza, | E | AVCODES |
| 5 | LZA | Lanza Air | | | ICAO1 |
| 6 | LZAC | LIN ZAC RENTALS INC | | | SCAC4 |
| 7 | LZB | Balkan Air Tours Ltd. | IATA: FB, Callsign: Balkan Tour, Name changed to Bulgaria Air. New State Airline to replace bankrupt Balkan - Bulgarian Airlines. | BG | AVCODES |
| 8 | LZB | Bulgaria Air | IATA: FB, Callsign: Balkan Tour, IATA Prefix: 623, ICAO callsign changed to Flying Bulgaria. Name changed from Balkan Air Tours Ltd. | BG | AVCODES |
| 9 | LZB | Bulgaria Air | IATA: FB, Callsign: Flying Bulgaria, IATA Prefix: 623, ICAO callsign changed from Balkan Tour. Name changed from Balkan Air Tours Ltd. | BG | AVCODES |
| 10 | LZB | Bulgaria Air | IATA: FB | | ICAO1 |
| 11 | LZBT | LA-Z-BOY TRANSPORTATION | | | SCAC4 |
| 12 | LZC | Lead & Zinc Complex PLC / Оловно цинков комплекс | | BG | VKM |
| 13 | LZCE | LAZARO DELIVERY CORP | | | SCAC4 |
| 14 | LZCI | LAZARO CONTRACTING INC | | | SCAC4 |
| 15 | LZCL | LAURITZEN COOL DANDERYD SWEDEN | | | SCAC4 |
| 16 | LZCS | LAZER CUSTOM SERVICES INC | | | SCAC3 |
| 17 | LZCS | LANZ CABINET SHOP INC | | | SCAC4 |
| 18 | LZEC | LAZER ENERGY COMPANY INC | | | SCAC4 |
| 19 | LZEP | LAZER EXPRESS | | | SCAC3 |
| 20 | LZF | Lease Fly | Callsign: Skylease, Name changed from Airlinair during 2012. | P | AVCODES |
| 21 | LZGB | LOPEZ, GABRIEL | | | SCAC4 |
| 22 | LZGT | LOZON, GERALD TRUCKING LIMITED | | | SCAC3 |
| 23 | LZHT | LITZ HORSE TRANSPORTATION INC | | | SCAC3 |
| 24 | LZHT | LANZ HOLDINGS SA | | | SCAC4 |
| 25 | LZIO | LAZIO TRUCKING INC | | | SCAC3 |
| 26 | LZKA | LARENTZAKIS, ANDY | | | SCAC4 |
| 27 | LZKG | LAZAROS TRUCKING SA DE CV | | | SCAC4 |
| 28 | LZKN | LOPEZ TRUCKING | | | SCAC4 |
| 29 | LZMM | LOZANO MARTINEZ, MARIO ALBERTO | | | SCAC4 |
| 30 | LZMS | LEVY, Z M TRANSPORT SERVICES LTD | | | SCAC4 |
| 31 | LZMT | LORENTZEN MARITIME AS | | | SCAC3 |
| 32 | LZND | LOZA ABRAJAN, NATIVIDAD | | | SCAC4 |
| 33 | LZNT | LOZANO TRUCKING | | | SCAC4 |
| 34 | LZON | LOZON, GERALD LIMITED | | | SCAC4 |
| 35 | LZP | Air Ban | Callsign: Doc Air, Ceased Operations. | BG | AVCODES |
| 36 | LZP | Air Ban | | | ICAO1 |
| 37 | LZR | Air Lazur | | | ICAO1 |
| 38 | LZRE | LOZA GUTIERREZ, CANDIDO | | | SCAC4 |
| 39 | LZRR | LOZANO RODRIGUEZ, JUAN JOSE | | | SCAC4 |
| 40 | LZRX | THE LUBRIZOL CORPORATION | | | SCAC4 |
| 41 | LZT | Lanzarote Aerocargo | Callsign: Baraka, | E | AVCODES |
| 42 | LZT | Lanzarote Aerocargo | | | ICAO1 |
| 43 | LZTA | LANZANI TRAVEL AGENCY | | | SCAC3 |
| 44 | LZTC | LEGZ TRUCKING CO INC | | | SCAC3 |
| 45 | LZTD | LOPEZ TRANSPORTATION S DE RL DE CV | | | SCAC4 |
| 46 | LZTF | LEZCANO TRUCKING AND TRANSFER LLC | | | SCAC4 |
| 47 | LZTG | LUTZ TRUCKING | | | SCAC3 |
| 48 | LZTL | LIPIZZAN TRANSPORT LTD | | | SCAC4 |
| 49 | LZTR | LAZ TRANS INC | | | SCAC4 |
| 50 | LZTS | LEITZ TOOLING SYSTEMS INC | | | SCAC4 |
| 51 | LZTU | LIANYUNGANG COSCO SHIPPING SPECIAL EQUIPMENT MANUFACTURING CO., LTD. | | PRC | BIC |
| 52 | LZYA | LAZY RIVER TRUCKING | | | SCAC4 |
| 53 | LZYK | LAZY K TRUCKING INC | | | SCAC4 |
| 54 | LZYM | LIZYM TRANSPORT | | | SCAC4 |
| 55 | LZYT | LAZY T2 TRUCKING | | | SCAC4 |
| 56 | LZZ | Biz Air | Ceased Operations. | BG | AVCODES |
| 57 | LZZA | LIUZZA PRODUCE FARM, INC. | | | SCAC4 |
| 58 | LZZU | XINJIANG OASIS MACHINERY CO., LTD. | | PRC | BIC |
