In Switzerland:

In polymer science:

Compact polystyrene

Civilian Public Service, a national system of work camps for conscientious objectors in the United States administered and paid for by the peace churches during World War II

ChoicePoint, whose New York Stock Exchange symbol is CPS

Constant pressure system, a technology used in some super soakers

Child Protective Services, a state or local government agency in the United States which investigates child abuse and neglect

Calls per second in telephony or other telecommunications

Continuation-passing style, a programming technique

Communist Parties ("CPs")

Canadian Power and Sail Squadrons, an association that teaches safe boating

Crown Prosecution Service, in the United Kingdom

Central Park South, a street in New York City

Certificate Practice Statement, legal document that describes how the Certificate Authority manages the certificates it issues

Current population survey, conducted by the United States Census Bureau to measure unemployment and other labor data

Chamberlayne Park School

Compass International Airways (ICAO airline designator)

Chicago Public Schools

Coalition for Positive Sexuality, a self-described "guerrilla sex education" group

Committee of Public Safety, the de facto executive government in France, 1793-1794

Children's Paradise School

Compendium of Pharmaceuticals and Specialties

Centre for Policy Studies, a British think-tank

Classroom Performance Systems, a technological student assessment system

Cambridge Philosophical Society, a scientific society at the University of Cambridge

Centipoise, a measurement of viscosity

Canadian Paediatric Society

Conversational programming system, an early time sharing operating system that ran on IBM System/360 mainframes

Carrier Preselect, a landline telephone option that lets European customers use a third party for call charges instead of using the national operator (British Telecom, KPN, Telekom, Swisscom, Belgacom, etc) without dialling a prefix

Calgary Police Service, the police force for the city of Calgary, Alberta

Creative Power Solutions, an engineering consulting firm specialising in power plant technology based in Baden, Switzerland

Center for the Partially Sighted, an agency that promotes independent living for people of all ages with impaired sight, in Los Angeles, California

Cincinnati Public Schools, Hamilton County, Ohio

College Preparatory School, a high school in Oakland, California

CPS Energy, San Antonio's municipally owned natural gas and electric company

Cycle(s) per second, now known as hertz, which is the SI unit for frequency

Capsaicin, a pungent component of chili peppers

Collaborative problem solving (from the book Explosive Child, a model to handle children and adolescents with behaviour problems)

Capcom Play Systems, CPS-1, CPS-2, and CPS-3, arcade system boards manufactured by Capcom in the early 1990s

Characters per second is a measurement of the data transfer rate during a Direct Client-to-Client file transfer, like bytes per second

Certified Professional SafeTech(tm), as awarded by the Safe and Vault Technicians Association

Crane, Poole & Schmidt, a fictional law firm in the television series Boston Legal