FI

FI or fi may refer to:

Places

 * Falkland Islands, a British Overseas Territory
 * Finland (ISO country code FI)
 * Finnish language (ISO 639 alpha-2 code "fi")
 * .fi, top-level domain of Finland
 * Province of Firenze, Italy

Arts, entertainment, and media

 * fi (album), a 2005 album by Bibio
 * Fi (TV series), a 2017 Turkish Internet TV series
 * Fi (The Legend of Zelda), a character in the 2011 video game The Legend of Zelda: Skyward Sword
 * Fi, the pitch equivalent to the fourth scale degree raised a half step, in the Solfège music education method
 * Films Incorporated a defunct educational movie company abbreviated to FI

Businesses and organizations

 * Feminist Initiative (Sweden), a political party
 * Finansinspektionen, the Financial Supervisory Authority in Sweden
 * Forza Italia, an Italian political party
 * Fourth International, an international communist organisation
 * Franciscans International, an NGO at the United Nations
 * Freudenthal Institute, a research institute that is part of Utrecht University
 * Front de l'Indépendance, a Belgian resistance organization in World War II
 * Icelandair (IATA code FI, from the old name of the company, Flugfélag Íslands)
 * La France Insoumise, a French political party
 * Financial Institution, establishment that focuses on the financial and/or monetary sector

Technology

 * , a scripting command in the Bourne shell and its derivatives
 * Fast Infoset, a standard for binary XML Infoset encoding
 * Fuel injection, a system for introducing fuel into internal combustion engines
 * High fidelity (disambiguation) (hi-fi)
 * Lo-fi (disambiguation)
 * Google Fi Wireless, a mobile virtual network operated by Google

Other uses

 * ﬁ (fi), a typographical ligature
 * Fecal incontinence
 * Fi (letter), a Georgian letter