PF

PF may refer to:

Arts and entertainment

• Pianoforte, full original name of the piano instrument
• Phineas Flynn, a fictional character
• Project Fanboy, a comic book news website
• Peregrine Falcons Squad, a faction in the Metal Slug series of video games

Businesses

• PF Flyers, a brand of shoes
• Palestinian Airlines (IATA code PF 1995-2020), a Palestinian airline that operated from Egypt
• Primera Air (IATA code PF 2009-2018), a Danish airline
• Pell Frischmann, a multi-disciplinary engineering consultancy

Economics and finance

• Pfennig, a unit of currency formerly used in Germany, symbol ₰
• Provident Fund (disambiguation), name of various pension funds

Language

• Phonetic form, a level of syntactic representation in linguistics
• Voiceless labiodental affricate (⟨p̪͡f⟩, ⟨p̪͜f⟩, or ⟨p̪f⟩), a type of consonant sound
• Pf (digraph), a German digraph

Organizations

• Pheasants Forever, a non-profit habitat conservation organization
• Federal Police (Polícia Federal), in Brazil
• Patients' Front, a late 1960s to early 1970s West German pro-illness movement
• South Vietnamese Popular Force, a local defense militia formed by South Vietnam during the Vietnam War
• Patriotic Front (disambiguation), name of a political party in several countries

Places

• Paracel Islands, FIPS PUB 10-4 territory code
• French Polynesia (Polynésie française), by ISO 3166 code
  • .pf, internet country code for French Polynesia
• Pforzheim and Enzkreis district, Germany (vehicle plate code PF)

Science and technology

Computing

• .pf, internet country code for French Polynesia
• PF (firewall), OpenBSD's stateful packet filter
• PF keys, a type of function keys on old keyboards
• Page fault, a type of exception (error) in computer programming
• Page file, a file used as an extension for computer memory

Physics

• Power factor, or cos phi, of an AC electric power system
• Purple fringing, a type of chromatic aberration in photography
• Phenol formaldehyde resin, the earliest synthetic polymer
• Picofarad (pF) or petafarad (PF), multiples of farad, the SI unit of electric capacitance
• Photon Factory, a synchrotron located at KEK in Tsukuba, Japan

In other sciences and mathematics

• pf(A), the Pfaffian of a matrix A
• Phenylphosphine, an organophosphorus compound
• Plasmodium falciparum, a species of Plasmodium that causes malaria in humans
• Polar front, in meteorology
• Position fix, a position derived from measuring external reference points
• Psychometric function, an inferential psychometric model
• Horowitz index (PF), blood oxygenation

Sports

• Personal foul (disambiguation), a type of foul in several sports
• Power forward (disambiguation), a type of position in several sports

Other uses

• A US Navy hull classification symbol: Patrol frigate (PF)
• Pilot flying, in commercial aviation, a designation for the pilot in control of an aircraft
• Pour féliciter, text on New Year card
• Procurator fiscal, the public prosecutor in Scotland
• Public forum debate, a debate sanctioned by the National Forensic League
• Pekoe Fannings, a grade of tea leaves

See also

• PF1 (disambiguation)