PSF

'''PSF''' is an abbreviation that may refer to: {{TOC right}}

== Organisations == === Political parties === * French Social Party ''(Parti Social Français)'' (1936–1940), a right-wing nationalist party * French Socialist Party ''(Parti Socialiste Français)'', active since 1969 * Palestinian Popular Struggle Front * Peoples Students Federation, the youth wing of the Pakistan People's Party * Provisional Sinn Féin, Ireland * Socialist Party without Borders ''(Parti Socialiste sans Frontières)'', a leftist party in Chad

=== Law enforcement === * Public Security Forces the principal law-enforcement arm of the Bahraini Ministry of Interior * Puntland Security Force, Somalia

=== Business and companies === * P.S.F. Records, a record label * Pennsylvania Shakespeare Festival, a professional theatre company * Professional service firm, a company offering consulting, legal, or other services * Premium Standard Farms, Inc, a pork producer * Pressed Steel Fisher, a supplier of British car parts

== Science and technology ==

===Software and hardware=== * PC Screen Font, a font format used in Linux systems * Physical Storage Format, a data format for navigation data * Portable Sound Format, a file format * Progressive segmented frame, a scheme to handle progressive scan video using interlaced equipment * Point spread function, the response of an imaging system to a point source * Protein Segment Finder, a search engine for the Protein Data Bank * Protein structure file for molecular dynamics, a chemical file format

===Chemistry=== * Polysulfone, a high-performance thermoplastic * Potassium fluorosilicate, specifically when referring to phosphors

===Other science and technology=== * Performance shaping factor, factor which poses a likelihood of influencing the success or failure of the performance of a task * Posterior spinal fusion * Prolate spheroidal wave function

==Other== * Pittsfield Municipal Airport (IATA airport code: PSF)

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