English abbreviations from casa to casp
- CASA (Civil Aviation Safety Authority)
- CASAC (Clean Air Scientific Advisory Committee)
- CASAIL (Computer Assisted Systematic Analysis of Instructor and Learner Behavior)
- CASARA (Civil Air Search and Rescue Association)
- CASB (Citizen's Association of Sunset Beach)
- CASC (Community Amateur Sports Clubs)
- CASCA ((organization) Canadian Astronomical Society / Société canadienne d'astronomie (the name is officially bilingual)[2])
- CASCO (Commerce and Administrative Student Charity Organization)
- CASCOM (Combined Arms Support Command)
- CASD (Center for Autism Spectrum Disorders)
- CASE (Cellular ammunition storage equipment)
- CAS ECM (Close Air Support Electronic Countermeasures System)
- CASEVAC (Casualty evacuation)
- CASF (Contingency Aeromedical Staging Facility)
- CASH (Carinthia Accesses Surrounding 'Hoods)
- CASL (Compact Application Solution Language)
- CASLPA (Canadian Association of Speech-Language Pathologists and Audiologists)
- CASLPO (College of Audiologists and Speech-Language Pathologists of Ontario)
- CASNR (College of Agricultural Sciences and Natural Resources)
- CASNY (Children's Aid Society of New York)
- CASOC (CASualty Operations Center)
- CASOP (Crisis Action Standing Operating Procedures)
- CASOS (Center for Computational Analysis of Social and Organizational Systems (Carnegie Mellon))
- CASP (Certified Aging Services Professional)
