GCR
# GCR

GCR (or GCRS) may refer to:

## Science

* Galactic cosmic ray, a cosmic ray from outside the Solar System
* Geocentric Celestial Reference System, a coordinate system for near-Earth objects like satellites
* Geological Conservation Review, a procedure of the British Joint Nature Conservation Committee
* Global catastrophic risk, a potential catastrophe that would affect the whole world
* Global Competitiveness Report, a yearly report published by the World Economic Forum
* Glucocorticoid receptor, a cell protein which responds to glucocorticoid compounds

## Technology

* Gas-cooled reactor, a type of nuclear reactor
* Ghost-canceling reference, a television subsignal
* Grey component replacement, substitution of black ink for gray ink in color printing
* Group coded recording, a technique for encoding digital data on magnetic tape or disk

## Transportation

* GCR, ICAO code for Tianjin Airlines, China
* GCR, stock symbol for Gaylord Container Corporation, an American packing material manufacturer
* Great Central Railway, a British railway company
   * Great Central Railway (heritage railway)
   * Great Central Railway (Nottingham)

## Other uses

* Glass City Rollers, an American roller derby league
* Graduate Common Room, a Common Room (university) for postgraduate students
* Global Corruption Report by Transparency International
* Gray City Rebels, a Brazilian roller derby league
* Green Corn Revival, an American band
* gcr, ISO 639-3 code for the French Guianese Creole language
* Groupe Communiste Révolutionnaire (Revolutionary Communist Group (Lebanon)), a Lebanese Trotskyite group
