PFR may refer to:

Science and technology

Plug flow reactor model The plug flow reactor model (PFR, sometimes called continuous tubular reactor, CTR, or piston flow reactors) is a model used to describe chemical reactions in continuous, flowing systems of cylindrical geometry. The PFR model is used to predict t ...

, a reactor simulation model *

Prototype Fast Reactor Dounreay (; ) is a small settlement and the site of two large nuclear establishments on the north coast of Caithness in the Highland (council area), Highland area of Scotland. It is on the A836 road west of Thurso. The nuclear establishments w ...

, a nuclear reactor at Dounreay * PFR, Phosphate Flame Retardant, a type of

Flame Retardant Flame retardants are a diverse group of chemicals that are added to manufactured materials, such as plastics and textiles, and surface finishes and coatings. Flame retardants are activated by the presence of an combustion, ignition source and pr ...

* pFR, a form of the light-sensing pigment

phytochrome Phytochromes are a class of photoreceptor proteins found in plants, bacteria and fungi. They respond to light in the red and far-red regions of the visible spectrum and can be classed as either Type I, which are activated by far-red light, or ...

found in plants * pFR, polymeric Flame Retardant, a type of

* Polynomial Freiman-Ruzsa, a conjecture in Mathematics

Other

* Partito Fascista Repubblicano, a former political party in Italy * Persons and Family Relations, one of the subjects covered in Civil Law on the Philippine Bar Examinations *

PFFR PFFR is an American production company and art collective based in Brooklyn, New York City and consisting of Vernon Chatman, John Lee, Alyson Levy and formerly Jim Tozzi until 2009. The group has been active since 1998. Work The group's por ...

, an alternative rock group * PFR (band) (Pray for Rain), a Christian music group * PFR, product feature request *

Pontefract Baghill railway station Pontefract Baghill railway station is one of the three railway stations that serve the market town of Pontefract in West Yorkshire, England. The other stations, Pontefract Monkhill railway station, Monkhill and Pontefract Tanshelf railway stati ...

, England; National Rail station code PFR * Pork fried rice, a Chinese dish * Portable Font Resource * Power finesse ratio, a statistic for baseball pitchers * Prism fusion range, a clinical eye test to assess motor fusion *

Pro Football Reference Pro Football Reference (PFR) is an online statistics database for professional American football maintained by Sports Reference. The site provides career statistics for players, teams, and games, as well as records and NFL draft history. PFR was ...

, a statistics database for professional American football * Promoted from Reserves (badminton) {{disambig