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