Psalms, a book in the Tanakh or Christian Bible

Plastic surgery

PlayStation 3

Public school, e.g., P.S. 31

PlayStation, a TV game console by Sony

PSone summary and related information.

Polystyrene, the resin identification code

PlayStation 2

Partido Socialista de Chile, Spanish for Socialist Party (Chile)

Priory of Sion, Prieuré de Sion, mentioned in The Da Vinci Code

PostScript, a page description language

Pferdestärke, German DIN definition for "horsepower"

Police Sergeant, uniformed senior police rank

Partidul Socialist [din România], Romanian for Socialist Party of Romania

French Socialist Party

Paddle steamer

Porous silicon

Power supply

Power steering

Positronium, pseudo-chemical symbol

Pulmonary Stenosis

.ps, the Palestinian Internet domain extension or top-level domain (ccTLD)

Social Democratic Party of Switzerland

Belgian Francophone Socialist Party, see: Socialist Party (francophone Belgium)

ps (Unix), an application that displays statistics on running processes

Phosphatidylserine, a phospholipid

Partido Socialista, Portuguese for Socialist Party (Portugal)

the Greek letter psi. In English, "ps" may be regarded as a diagraph for /s/, as the "p" is silent.

picosecond, an SI unit of time equivalent to 10^-12 of a second, standard abbreviation ps (uncapitalized).

P.S., a 2004 film

Postscript, a message appended to a letter after the writer's signature

Parametric Stereo

PS Classics, a record label

Proton Synchrotron

Professional services, especially those provided by a vendor

Program stream, an MPEG-2 container format

Parti Socialiste

PS is a two-letter abbreviation. PS in letters stands for post scriptum, or postscript.

Pashto language, ISO 639 alpha-2 language code

Picosiemens, an SI unit of electric conductance; see: pico- and siemens (unit)

Peta second, an SI unit of time equivalent to 10¹⁵ seconds; see: Peta (prefix) and second

Palau, FIPS PUB 10-4 territory code

Palestinian territories, ISO 3166 country code

Ukraine International Airlines, IATA airline designator

Adobe Photoshop, a graphics editor and creator by Adobe.

P.S. (A Toad Retrospective), a compilation album of music by Toad the Wet Sprocket

P.S. (album), a compilation album of film music by Goran Bregovic

"PS," a song by The Books from the album The Lemon of Pink

PeopleSupport, a Los Angeles-based business process outsourcing company

Phantasy Star, series of RPG games by SEGA.