| 1 | MDN | Meridiana Air, SA | IATA: RH, Callsign: Meridiana Air, Ceased operations on 16 October 1992. | E | AVCODES |
| 2 | MDN | Meridian+, NP AGP, LLC | | RUS | AVCODES |
| 3 | MDN | Mcdan Aviation San Marino S.r.l. | Callsign: Macdan, | RSM | AVCODES |
| 4 | MDN | Mudan Airlines | | | ICAO1 |
| 5 | MDNB | MADDEN LTD | | | SCAC4 |
| 6 | MDND | MCDONALD TRUCKING | | | SCAC4 |
| 7 | MDNJ | MIDNIGHT OIL CO | | | SCAC4 |
| 8 | MDNL | MERIDIAN LINE | | | SCAC4 |
| 9 | MDNM | MCDANNELL OIL | | | SCAC4 |
| 10 | MDNN | MIDNIGHT TRANSPORT | | | SCAC4 |
| 11 | MDNP | MARQUIS, DANNY & SON TRANSPORT | | | SCAC4 |
| 12 | MDNR | MUSICAL DEL NORTE SA DE CV | | | SCAC4 |
| 13 | MDNV | METAL DESIGN NIAGARA | | | SCAC4 |
| 14 | MDNW | MADISON INTERMODAL LLC | | | SCAC4 |
| 15 | MDNY | MIDNIGHT TRUCKING | | | SCAC4 |
