| 1 | MY | Aerotransportes Mas de Carga, S.A. de C.V. t/a MasAir | ICAO: MAA, Callsign: MAS Carga, IATA Prefix: 865, Founded in 1992. Commenced operations on 01/04/1992. IATA designator changed to M7. Designator MY reinstated by IATA | MEX | AVCODES |
| 2 | MY | Société Nationale Air Mali | ICAO: AMY, Callsign: Mali, Founded on 27 October 1960. Ceased operations during 1988. | RMM | AVCODES |
| 3 | MY | Heli France | ICAO: HFR, Callsign: Helifrance, Designator MY recalled by IATA | F | AVCODES |
| 4 | MY | Euroscot Express Ltd. d/b/a Happyjet | ICAO: EUJ, Callsign: Scotair, Ceased operations | GB | AVCODES |
| 5 | MY | MAXjet Airways Inc. | ICAO: MXJ, IATA Prefix: 386, Ceased Operations | USA | AVCODES |
| 6 | MY | Maya Island Air | ICAO: MYD, Callsign: Myland, IATA designator changed to 2M | BH | AVCODES |
| 7 | MY | Midwest Airlines | ICAO: MWA, Designator MY* recalled by IATA | ET | AVCODES |
| 8 | MY | Maswings Sdn Bhd | ICAO: MWG, Callsign: Maswings, Designator 7B recalled by IATA. Now using Malaysia Airlines IATA Code MH. | MAL | AVCODES |
| 9 | MYA | Myflug H.F. | Callsign: Myflug, | IS | AVCODES |
| 10 | MYA | Myflug | | | ICAO1 |
| 11 | MYA | | | MYA | TRAFFIC |
| 12 | MYAB | MAYA EXPEDITION INC | | | SCAC4 |
| 13 | MYAC | MONTGOMERY AGENCY INC | | | SCAC4 |
| 14 | MYAF | MYSTIC TRANSPORTATION LTD | | | SCAC4 |
| 15 | MYAJ | MY BUS | | | SCAC4 |
| 16 | MYAL | MOYA LOPEZ, ERNESTO | | | SCAC4 |
| 17 | MYAM | MAYERS, AMBER | | | SCAC4 |
| 18 | MYAO | MURRAY AG TRANSPORT LLC | | | SCAC4 |
| 19 | MYAP | MORLYN ASPHALT CORP | | | SCAC4 |
| 20 | MYAR | MOYARS TRUCKING | | | SCAC4 |
| 21 | MYAT | MIYA TRANSPORT LLC | | | SCAC4 |
| 22 | MYAW | MYERS, ALLAN A | | | SCAC4 |
| 23 | MYB | Aerolineas Del Mayab, S.A. de C.V. | Callsign: Delmayab, | MEX | AVCODES |
| 24 | MYBD | MEYER TRUCKING INC (OTR DIVISION) | | | SCAC4 |
| 25 | MYBI | MONTEREY BOATS | | | SCAC4 |
| 26 | MYBK | MAYBANK SHIPPING CORPORATION | | | SCAC1 |
| 27 | MYBK | MAYBANK SHIPPING COMPANY | | | SCAC4 |
| 28 | MYBM | MUNDAY | | | SCAC4 |
| 29 | MYBN | MAY, BRENT TRANSPORT INC | | | SCAC4 |
| 30 | MYBS | MEYERS BROS TRUCKING LLC | | | SCAC4 |
| 31 | MYBT | MANLEY & SHEPPARD ANTIQUES | | | SCAC4 |
| 32 | MYBW | MCCULLEY, BILL TRUCKING | | | SCAC4 |
| 33 | MYCA | MURPHY, C A OIL CO INC | | | SCAC4 |
| 34 | MYCA | MyCargo Airlines | ACT Airlines (Turkish: ACT Havayollari) formerly branded as myCargo Airlines | A | TRAFFIC |
| 35 | MYCC | MERCURY LOGISTICS INC | | | SCAC4 |
| 36 | MYCE | MCGILLIVRAY CATTLE CO INC | | | SCAC4 |
| 37 | MYCF | MAYCO FREIGHT LLC | | | SCAC4 |
| 38 | MYCG | MAQUINADOS Y CONTRATOS DE | | | SCAC4 |
| 39 | MYCI | MYMENU CANADA INC | | | SCAC4 |
| 40 | MYCJ | MALL CITY CONTAINERS INC | | | SCAC4 |
| 41 | MYCK | MERMAID SPRINGS POTTERY | | | SCAC4 |
| 42 | MYCL | MEYER TRANSPORT LLC | | | SCAC4 |
| 43 | MYCN | MYC TRANSPORTATION INC | | | SCAC4 |
| 44 | MYCO | MAX YIELD COOPERTIVE | | | SCAC4 |
| 45 | MYCP | MYERS CIRCLE AG TRANSIT LLC | | | SCAC4 |
| 46 | MYCR | MYERS COUNTRY GUNSHOP | | | SCAC4 |
| 47 | MYD | Maya Island Air | IATA: MW, Callsign: Myland, Designator MW recalled by IATA | BH | AVCODES |
| 48 | MYD | Maya Island Air | IATA: MY, Callsign: Myland, IATA designator changed to 2M | BH | AVCODES |
| 49 | MYD | Maya Island Air | IATA: 2M, Callsign: Myland, IATA designator changed from MY | BH | AVCODES |
| 50 | MYD | Maya Island Air | IATA: MW | | ICAO1 |
| 51 | MYDA | MARREINA ARMADORA SA | | | SCAC4 |
| 52 | MYDC | MEYER DECORATIVE SURFACES | | | SCAC4 |
| 53 | MYDF | MAYFIELD DAIRY FARMS LLC | | | SCAC4 |
| 54 | MYDG | MERCURY DISTRIBUTION & LOGISTICS LL | | | SCAC4 |
| 55 | MYDR | MICHIANA DELIVERY SERVICE | | | SCAC4 |
| 56 | MYDT | MALLY DESIGNS LTD | | | SCAC4 |
| 57 | MYDY | MAYSON MACHINING LTD | | | SCAC4 |
| 58 | MYE | Aerolineas Del Mayab, S.A. de C.V. | Callsign: Delmayab, ICAO designator changed to MYB | MEX | AVCODES |
| 59 | MYEB | MARTYS SCREW PRODUCTS INC | | | SCAC4 |
| 60 | MYED | MAQUINARIA Y EQUIPOS RECONSTRUIDOS | | | SCAC4 |
| 61 | MYEG | MAYES TRUCKING | | | SCAC4 |
| 62 | MYEI | MYERS, REX TRANSFER INC | | | SCAC4 |
| 63 | MYEK | MEYER TRUCKING INC | | | SCAC4 |
| 64 | MYEM | MEYERS | | | SCAC4 |
| 65 | MYEQ | MEYER TRUCKING INC | | | SCAC4 |
| 66 | MYER | MYER, GLENN TRANSPORTATION | | | SCAC4 |
| 67 | MYEV | MEYERS VAN LINES INC | | | SCAC4 |
| 68 | MYEW | MCINTYRE, PATRICK | | | SCAC4 |
| 69 | MYEY | M & Y | | | SCAC4 |
| 70 | MYF | Myflight, S.A. de C.V. | Callsign: My Flight, | MEX | AVCODES |
| 71 | MYFB | MAYFIELD BROKERAGE | | | SCAC4 |
| 72 | MYFC | MAY FAIR COLONY FARM LTD | | | SCAC4 |
| 73 | MYFE | MONTOYA VELAZQUEZ, JOSE RAMON (MX-5 | | | SCAC4 |
| 74 | MYFG | MYSTIC HILLS TRANSPORTATION | | | SCAC4 |
| 75 | MYFL | MURRAYS FARM SUPPLIES | | | SCAC4 |
| 76 | MYFR | MARY'S FREIGHT LINES | | | SCAC1 |
| 77 | MYFR | MADERERIA | | | SCAC4 |
| 78 | MYFS | MONTGOMERY FREIGHT SOLUTIONS | | | SCAC4 |
| 79 | MYFY | MERCURY FREIGHT SYSTEMS INC | | | SCAC4 |
| 80 | MYGL | MAYO GLOBAL TRANSPORTATION INC | | | SCAC4 |
| 81 | MYGP | MEYER TRUCKING INC (GP DIV) | | | SCAC4 |
| 82 | MYGS | METAL RECYCLING SERVICES INC | | | SCAC4 |
| 83 | MYHB | MAY, TOMMY C C H B | | | SCAC4 |
| 84 | MYHD | MACY'S LIGHT DELIVERY, INC | | | SCAC1 |
| 85 | MYHD | MACYS LIGHT DELIVERY INC | | | SCAC4 |
| 86 | MYHQ | MEYERS | | | SCAC4 |
| 87 | MYI | Mayair, S.A. de C.V. | IATA: 7M, Callsign: Mayair, | MEX | AVCODES |
| 88 | MYI | Mayair | | | ICAO1 |
| 89 | MYI | MAYERS CHARTERS | | | SCAC4 |
| 90 | MYIC | MAYWAH IMPORTS INC | | | SCAC4 |
| 91 | MYIG | METALICO YOUNGSTOWN INC | | | SCAC4 |
| 92 | MYII | MALLORY INDUSTRIES INC | | | SCAC4 |
| 93 | MYIL | MYSTIC ISLAND TRANSPORT INC | | | SCAC4 |
| 94 | MYIM | MONTERREY IRON & METAL | | | SCAC4 |
| 95 | MYIN | MAYS INDUSTRIAL CONTRACTORS INC | | | SCAC4 |
| 96 | MYJ | Malmö - Ystads Järnväg | 1874 - 1941 | S | svenska-lok.se |
| 97 | MYJE | MCSHERRY | | | SCAC4 |
| 98 | MYJQ | MEYERS, J B | | | SCAC4 |
| 99 | MYK | Multi Air Services (MAS) | | RMM | AVCODES |
| 100 | MYK | Beijing Mykylin General Aviation Co., Ltd. | Callsign: Mylin, | PRC | AVCODES |
