FSN may refer to:
- Fate/stay night, a visual novel
- Federal State of Novorossiya, a separatist entity in eastern Ukraine
- Federal Stock Number, a defunct codification system used by the United States federal government
- Federation of Student Nationalists, the student wing of the Scottish National Party
- Fjölbrautaskóli Snæfellinga, an Icelandic high school (menntaskóli) located in Grundarfjörður
- FN Five-seven, a Belgian pistol
- Fox Sports Networks, an American television network
- Fox Sports News (Australia), an Australian television channel
- Fox Sports North, the former name of an American regional sports network by Fox Sports Networks
- Full Service Network, an American telecommunications company
- Fu's subcutaneous needle
- National Social Front (Italian: Fronte Sociale Nazionale), an Italian political party
- National Salvation Front (Romania) (Romanian: Frontul Salvării Naționale), a defunct Romanian political party
This disambiguation page lists articles associated with the title FSN.If an internal link led you here, you may wish to change the link to point directly to the intended article. Category: