| 1 | MEG | Megamicro RT. | Callsign: Megamicro, | H | AVCODES |
| 2 | MEG | Mega Airlines | Callsign: Megalines, | AM | AVCODES |
| 3 | MEG | Mega Global Air Services (Maldives) Pvt. Ltd. t/a MEGA Maldives Airlines | IATA: 5M, Callsign: Sandbar, Founded on 23 February 2010. AOC granted on 22 December 2010. Commenced operations on 23 December 2010. IATA Designator changed to LV | MV | AVCODES |
| 4 | MEG | Mega Global Air Services (Maldives) Pvt. Ltd. t/a MEGA Maldives Airlines | IATA: LV, Callsign: Sandbar, IATA Prefix: 400, Founded on 23 February 2010. AOC granted on 22 December 2010. Commenced operations on 23 December 2010. Ceased operations on 02 May 2017. IATA Designator changed from 5M | MV | AVCODES |
| 5 | MEG | Mitteldeutsche Eisenbahn GmbH | Schkopau | D | privat-bahn.de |
| 6 | MEG | Märkische Eisenbahngesellschaft GmbH | Plettenberg | D | privat-bahn.de |
| 7 | MEG | Mitteldeutscher Eisenbahngesellschaft GmbH | | D | TRAFFIC |
| 8 | MEG | Mitteldeutsche Eisenbahn Gesellschaft | | DE | VKM |
| 9 | MEGA | Megabus | | GB | TRAFFIC |
| 10 | MEGB | M E LOGISTICS INC | | | SCAC4 |
| 11 | MEGC | MEGA FLEET LOGISTICS | | | SCAC4 |
| 12 | MEGF | MEGA FUELS | | | SCAC4 |
| 13 | MEGG | MEGA CHEMICALS SCHIFFAHRT AG | | | SCAC4 |
| 14 | MEGH | MEGA TRANSFER INC | | | SCAC4 |
| 15 | MEGI | MEGA LOGISTICS INC | | | SCAC4 |
| 16 | MEGJ | MASTER TRANSPORTATION INC | | | SCAC4 |
| 17 | MEGK | MILLER ENVIRONMENTAL GROUP INC | | | SCAC4 |
| 18 | MEGO | MEGA TRANSPORTACIONES DEL NORTE SA | | | SCAC4 |
| 19 | MEGQ | MENINI CARTAGE, INC | | | SCAC1 |
| 20 | MEGR | MEGA STAR TRADING INC | | | SCAC4 |
| 21 | MEGU | SHANGHAI MEG IMPORT AND EXPORT CORPORATION | | PRC | BIC |
| 22 | MEGW | MEGA SUPPLY CHAIN SOLUTIONS INC | | | SCAC4 |
| 23 | MEGX | MEGLOBAL AMERICAS INC | | | SCAC4 |
| 24 | MEGY | MAINE ENERGY INC | | | SCAC4 |
