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 (F<sub>o</sub>), 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

See also

  • Foe (disambiguation)
  • Pho