FO

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title: "FO" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public topic_path: "uncategorized" source: "https://en.wikipedia.org/wiki/FO" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

Fo or FO may refer to:

Arts and entertainment

• Fallout (video game), a 1997 video game
• Fo Fai, a character in the Battle Arena Toshinden video game series
• Folio (printing), a book size, the page number of books, or sheets with multiple printed pages
• Foreign Objects (band), a Pennsylvania music group
• FunOrb, a 2008 Java-based gaming website

Businesses and organisations

• Par Avion (airline) (IATA airline designator), airline of Tasmania, Australia
• Family office, an investing office controlled by a family
• Felix Airways (IATA airline designator), a regional airline of Yemen
• Football Outsiders, a website devoted to statistical analysis of the NFL
• Force Ouvrière, a French trade unions confederation
• Foreign Office, a department of the United Kingdom government, currently named Foreign, Commonwealth and Development Office
• Flybondi (IATA airline designator), airline of Argentina

Mathematics, science and technology

Computing

• FO (complexity), a complexity class

• .fo, the country code top level domain (ccTLD) for Faroe Islands

• Fiber optic

• XSL Formatting Objects (XSL-FO), a markup language

Other uses in mathematics, science, and technology

• Fan out (FO), number of loads at the output of a ring oscillator
• First-order logic, a system of mathematical logic
• Forsterite, magnesium-rich end-member in the olivine solid solution series
• Fourier number (Fo) in physics
• Fuel factor (Fo), used to check the accuracy of an emission measurement system
• Fuel oil, also called Furnace Oil
• FO, a subunit of F1FO type ATPase enzyme

Military or aeronautical roles

• Field officer, a senior army officer
• First Officer, or co-pilot on an airliner
• Flying officer, a Royal Air Force rank
• Forward Observer, a soldier who directs artillery fire

People

• Dario Fo (1926–2016), Italian playwright and Nobel laureate
• Fo Porter, a contestant on America's Next Top Model, Cycle 12
• Fó or Fú (佛、仏), the Chinese translation of the term Buddha
• Franco-ontarien, referring to a French-speaking citizen of the (largely anglophone) Canadian province of Ontario, Canada

Places

• Faroe Islands, ISO 3166-1 country code, FO
  • .fo, the country code top level domain (ccTLD) for Faroe Islands
  • Faroese language (language code fo), a North Germanic language
• Fô Department of the Houet Province of Burkina Faso
• , the chief town in Fo Department
• Province of Forlì, Italy
• Fort Ord, California

Other uses

• Face Off (disambiguation)
• Faroese language (language code fo), a North Germanic language
• Foreign object (disambiguation)
• Front office, an area where visitors arrive and first encounter a staff at a place of business
• Fuck off (disambiguation), an English expletive, and various other meanings
• Furka Oberalp Railway, a Swiss railway
• Follow-on, a practice of making a team bat multiple innings in a row in cricket

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