CSR

Biology

Central serous retinopathy, a visual impairment
Cheyne–Stokes respiration, an abnormal respiration pattern
Child sex ratio, ratio between female and male births
Class switch recombination, a process that changes the constant region of an immunoglobulin
Clinical study report, on a clinical trial
Combat stress reaction, a condition also known as shell shock or battle fatigue
C-S-R Triangle theory, an application of the universal adaptive strategy theory to plant biology in which strategies are competitor, stress tolerator, and ruderal

Certificate signing request, in computer security
Command success rate, a measure of performance in computer speech recognition programs
Compressed sparse row, a storage format for a sparse matrix
Control/Status Register, a register in central processing units

Chinese Soviet Republic, a short-lived state in 20th century China
Common Sense Revolution, a political movement in Ontario, Canada
Community service register, a type of police report in India
Comprehensive School Reform, a program administered by the U.S. Department of Education
Comprehensive Spending Review, a governmental process in the United Kingdom carried out by HM Treasury
Cost sharing reductions subsidy, until its elimination in 2017, a primary component of high-deductible health plans under the U.S. Patient Protection and Affordable Care Act (often referred to as Obamacare)
Czechoslovak Republic, several historical states in Europe

Center for Scientific Review, a center at the National Institutes of Health, US Department of Health and Human Services
Centre for Software Reliability, UK
Center for Strategic Research (Iran), a research governmental institute in Iran
Comités syndicalistes révolutionnaires, a former a trade-unionist organization
CSR plc, formerly Cambridge Silicon Radio, a British silicon chip designer and software company
CSR Corporation Limited, a former Chinese manufacturer of locomotive and rolling stock
CSR Group, a Chinese railway equipment manufacturer
CSR Limited, an Australian industrial company, formerly known as Colonial Sugar Refining Company
Cutch State Railway, a former Indian railway company

Cognitive science of religion, the study of religious thought and behavior from the perspective of the cognitive and evolutionary sciences
Cultic Studies Review, a journal on cults, psychology, and religion

CSR 97.4FM, a radio station in Canterbury, UK
CSR Racing, a 2012 drag racing game for mobile platforms
CSR (group), a South Korean girl group
Team 18, an Australian V8 Supercar team
C Sports Racer, a class of racing cars
Cab Secure Radio, a radio telephone system used on UK railways
C. S. R. Anjaneyulu (1907–1963), an Indian actor
Canning Stock Route, the longest historic livestock route in the world
Corn Suitability Rating, a measure of soil quality commonly used in the state of Iowa, US
Certified shorthand reporter, a court reporter
Customer service representative, a job title in the service industry
Cherokee Scout Reservation, a Boy Scout camp in Caswell County, North Carolina
Cedarlands Scout Reservation, a Boy Scout camp in Long Lake, New York
Competition Success Review, a youth magazine published in India
Corporate social responsibility, a concept whereby businesses take responsibility for the impact of their activities
Complete spatial randomness
Czechoslovak Socialist Republic, which broke up in 1990