FDN may refer to:

Organizations

  • Dolphin Air, a defunct Ermirati airline
  • Flying Doctors Nigeria, an air ambulance service
  • French Data Network, a French non-profit Internet service provider
  • Fruta del Norte mine, an Ecuadorian gold mine

Politics

  • National Democratic Front (Mexico) (Spanish: '), a defunct political coalition
  • National Democratic Front (Peru) (Spanish: '), a defunct political party
  • New Democratic Forces (French: '), a defunct political party in the Republic of the Congo
  • Nicaraguan Democratic Force (Spanish: '), a Nicaraguan Contra group
  • Nigerien Democratic Front (French: '), a defunct political party of Niger

Other uses

  • Fairbanks Daily News-Miner, a newspaper in Fairbanks, Alaska, US
  • Faridabad New Town railway station, in Haryana, India
  • Fixed Dialing Number, in telephony