FO
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 Airlines of Tasmania (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