CAST

Medicine

Cardiac Arrhythmia Suppression Trial, a heart study in the 1980s
Childhood Autism Spectrum Test, formerly the Childhood Asperger Syndrome Test
Chronic addiction substitution treatment, a policy adopted in Vancouver Canada to reduce the harms of drug prohibition

CAST (company), a software intelligence company
Canadian Air-Sea Transportable Brigade Group, a former organization in the Canadian military
Carolina Actors Studio Theatre, a theater company in Charlotte, North Carolina
Centre for Analysis of Strategies and Technologies, a Russian non-governmental organization which conducts research on arms trade and defense trends
Certification Authorities Software Team, avionic certification harmonization
China Academy of Space Technology
China Association for Science and Technology
Coalition to Abolish Slavery and Trafficking, a Los Angeles-based anti-human trafficking organization
College of Arts, Science and Technology, former name of the University of Technology, Jamaica
Commercial Aviation Safety Team (CAST), an organization with the US FAA which provides safety recommendations for commercial aircraft
Curriculum Advice and Support Team, former name of the Scottish Further Education Unit

CAST tool, a program for testing software
CERN Axion Solar Telescope, an experiment in astroparticle physics to search for axions from the Sun
Computer-aided simple triage, computerized methods or systems that assist physicians
Computer-adaptive sequential testing, a type of multi-stage testing
CRISPR-associated transposons, mobile genetic elements that have evolved to make use of minimal CRISPR systems for RNA-guided transposition of their DNA

CAST (gene), which encodes the protein calpastatin
CAST (race), a fictional race of androids in the Phantasy Star series of video games