CRS

CRS may refer to:

Government related

 * Career Retention Specialist, a Marine responsible for enlisted retention in U.S. Marine Corps units
 * China Reconstruction Society, also known as the Blue Shirts Society, a Fascist clique and secret police or para-military force in the Republic of China between 1931 and 1938
 * Commission of Railway Safety, rail safety authority in India
 * Common Reporting Standard, an OECD standard for exchange of information
 * Community Relations Service, United States Department of Justice branch for CR and civil rights
 * Compagnies Républicaines de Sécurité, the French riot-control force
 * Congressional Research Service, the public-policy arm of the United States Congress
 * Compulsory Registration Scheme a Bureau of Indian Standards (BIS) Scheme

NGO or commercial

 * Catholic Relief Services, an American international humanitarian agency
 * Center for Resource Solutions, a nonprofit public agency in the United States
 * Classic Rock Society, a UK-based organisation to promote classic and progressive rock music
 * Co-operative Retail Services, a former co-operative society in the United Kingdom
 * Creation Research Society, a Christian research group which engages in creation science
 * Croatian Register of Shipping, an independent classification society working in the marine market
 * Somaschi Fathers (Ordo Clericorum Regularium a Somascha), a charitable religious congregation

Medicine and biology

 * Cambridge Reference Sequence, used in mitochondrial DNA testing
 * Caudal regression syndrome, a rare congenital disorder
 * Chinese restaurant syndrome, purportedly caused by the flavor enhancer glutamate
 * Chronic rhinosinusitis
 * Congenital rubella syndrome, a disease passed from mother to fetus
 * Cutaneous radiation syndrome, a syndrome that results from acute radiation exposure to the skin
 * Cytokine release syndrome, in immunology
 * Cytoreductive surgery, in cancer treatment

Computer science and engineering

 * Canada Remote Systems, a now-defunct bulletin-board system based in Toronto
 * Carrier Routing System, a large-scale core router
 * Cluster Ready Services, components of Oracle Clusterware for database support
 * Cold rolled steel
 * Commercial Resupply Services, a NASA contract to deliver supplies to space
 * Common reference string model, in cryptography
 * Computer reservations system (or Central Reservation System), a computerised system used for travel bookings
 * Coordinate reference system, used to locate geographical entities

Other uses

 * Camp Rising Sun (New York), an international leadership-program for youth development
 * Child Rebel Soldier, a hip-hop supergroup composed of Kanye West, Lupe Fiasco, and Pharrell
 * Classroom response system, an interactive teaching tool using "clicker questions"
 * Seychellois Creole (ISO 639-3 language code), a French-based creole language of the Seychelles
 * Colorado Revised Statutes, the legal code of Colorado
 * Cosmic Ray Subsystem, a spacecraft instrument on the Voyager probe that helped detect the interstellar medium
 * Consumer Recreation Services, a fictional company which features in the 1997 film The Game

Distinguish from

 * seeress, a female prophet