MDN
# MDN

MDN may refer to:

## Computing and technology

* MDN Web Docs (formerly Mozilla Developer Network), a Mozilla website for developer documentation
* Message Disposition Notification, a form of return receipt for e-mail
* Telephone number for mobile devices, as in:
   * Mobile device number
   * Mobile dialable number
   * Mobile directory number

## Organizations

* Ministry of National Defence (Portugal) (Ministério da Defesa Nacional), the Portuguese defence ministry
* Nicaraguan Democratic Movement (Movimiento Demócratico Nicaragüense)

## Transport

* Macedon railway station, Victoria, Australia (station code: MDN)
* Madison Municipal Airport (Indiana), Madison, Indiana, United States (IATA code: MDN)
* Maiden Newton railway station, England (National Rail station code: MDN)
* Medan railway station, North Sumatra, Indonesia (station code: MDN)
* Meriden (Amtrak station), Connecticut, United States (Amtrak station code: MDN)
* Minggang East railway station, China (China Railway telegraph code: MDN)
* Morden tube station (London Underground station code: MDN)
* Mudan Airlines, Somali Republic (ICAO code: MDN)

## Other uses

* East German mark (Mark der Deutschen Notenbank), the official unit of currency in East Germany from 1964 to 1967
* Maya Day Number, the sum of days in Mesoamerican Long Count calendar
* Mbati language (ISO 639-3: mdn)
* MdN Interactive, the magazine for Macintosh designers Network
* MDN, a television station in Griffith, New South Wales, and sister station of MTN
