CPS
- CERN Proton Synchrotron
- CP System
- CPS (programadora)
- CPS Energy
- CSR plc
- Calgary Police Service
- Calls per second
- Cambridge Philosophical Society
- Canadian Paediatric Society
- Canadian Power and Sail Squadrons
- Cancer Prevention Study
- Capsaicin
- Carbamoyl phosphate synthase II
- Carbamoyl phosphate synthetase
- Caroline Springs railway station
- Central Police Station (disambiguation)
- Centre for Policy Studies
- Certification Practice Statement
- Chicago Public Schools
- Child protective services
- Chinese Poetry Society
- Chlorpyrifos
- Cincinnati Public Schools
- Circumsporozoite protein
- Civilian Public Service
- Clapham South tube station
- Cleveland Photographic Society
- Coalition for Positive Sexuality
- Colegio de la Preciosa Sangre de Pichilemu
- College of Physicians and Surgeons (disambiguation)
- Communist Party of Scotland
- Comorbidity–polypharmacy score
- Compendium of Pharmaceuticals and Specialties
- Constant Pressure System
- Continuation-passing style
- Convention Panafricaine Sankariste
- Conventional Prompt Strike
- Conversational Programming System
- Corel Photo House
- Cost-per-sale
- Counts per second
- Crown Prosecution Service
- Current Population Survey
- Cyber-physical system
- Cycle per second
- Poise (unit)
- Presentation Sisters
- Problem solving
- St. Louis Downtown Airport
- The College Preparatory School