PFR

PFR may refer to:

==Science and technology== Plug flow reactor model, a reactor simulation model Prototype Fast Reactor, a nuclear reactor at Dounreay PFR, Phosphate Flame Retardant, a type of Flame Retardant pFR, a form of the light-sensing pigment phytochrome found in plants pFR, polymeric Flame Retardant, a type of Flame Retardant Polynomial Freiman-Ruzsa, a conjecture in Mathematics