PPS

PPS commonly refers to:
 * Post-postscript, an afterthought, usually in a document.

PPS may also refer to:

Aviation

 * Puerto Princesa International Airport, Palawan, Philippines (by IATA code)
 * Priority Passenger Service, in Singapore Airlines' frequent flyer programme

Business and finance

 * Pay per sale, a payment method used in affiliate marketing
 * Premium Packaged Spirits or Pre-Packaged Spirits, a term for alcopops
 * Purchasing power standard, an artificial currency unit
 * Public Procurement Service, a South Korean government agency

Government

 * Parliamentary Private Secretary, a UK and New Zealand civil service post
 * Parliamentary Protective Service, a Canadian law enforcement agency
 * Partnership for Prosperity and Security in the Caribbean, an agreement between nations in the Caribbean region
 * Personal Public Service Number, an identifier used in the Republic of Ireland
 * Planning Policy Statements, under the UK's Planning and Compulsory Purchase Act 2004
 * Prospective payment system, a health care payment model in the United States
 * Public Prosecution Service (disambiguation), various bodies charged with bringing criminal prosecutions to court
 * Public Procurement Service, South Korea
 * Provincial Police Service, a state civil service for police in Indian state of Uttar Pradesh

Education

 * Paterson Public Schools, a school district in New Jersey, US
 * Pawhuska Public Schools, a school district in Oklahoma, US
 * Princeton Public Schools, another New Jersey school district
 * Pittsburgh Public Schools, a school district in Pennsylvania, US
 * Portland Public Schools (Oregon), another US school district
 * Politics, Psychology and Sociology, an undergraduate degree course at the University of Cambridge

Political parties

 * Pact for Sicily (Patto per la Sicilia), Italy
 * Party of Progress and Socialism, Morocco
 * Pirate Party Switzerland
 * Polish Socialist Party (Polska Partia Socjalistyczna)
 * Popular Socialist Party (Brazil)
 * Popular Socialist Party (Mexico)

Computing

 * .pps, or PowerPoint Show, a file format used by the Microsoft PowerPoint presentation software
 * Packets per second, a measure of throughput
 * PPS.tv, Chinese peer-to-peer streaming video network software
 * Programmable power supply
 * Proofpoint Protection Server, a commercial product to detect and quarantine spam
 * Pulse per second signal, in the Network Time Protocol

Medicine

 * Parkinson plus syndrome, a group of neurodegenerative diseases
 * Pentosan polysulfate, a drug used to treat interstitial cystitis
 * Popliteal pterygium syndrome, an inherited condition affecting the face, limbs, and genitalia
 * Post-polio syndrome, a condition that affects some people who have previously survived an acute attack of poliomyelitis
 * Puppy pregnancy syndrome, a delusional illness in humans

Military technology and weapons

 * Precise Positioning Service, a military Global Positioning System feature
 * PPS submachine gun, a Soviet WWII-era submachine gun
 * Walther PPS, a compact semi-automatic pistol

Organic chemistry

 * Poly(p-phenylene sulfide), a thermoplastic polymer
 * PPS film capacitor, with a polyphenylene sulfide dielectric
 * PPS Silent Surfactant, a cleavable detergent in biochemistry

Other uses

 * Popular Patristics Series, a book series by [[Saint Vladimir's Orthodox Theological Seminary
 * St. Vladimir's Seminary]] Press
 * Project for Public Spaces, a US nonprofit organization
 * Puyo Puyo Sun, a 1996 puzzle video game
 * Princess Peach: Showtime!, an upcoming 2024 video game
 * Premier Program Service (a.k.a. PPS), a proposed, but never launched, fifth television network that would have been operated by MCA Inc. & Paramount Communications