GCG may refer to:
;Biochemistry
* GCG, a codon for the amino acid
alanine
*
Gallocatechin gallate
Gallocatechin gallate (GCG) is the ester of gallocatechin and gallic acid and a type of catechin. It is an epimer of epigallocatechin gallate (EGCG).
In a high temperature environment, an epimerization
In stereochemistry, an epimer is one of a ...
, a flavonol
*
Proglucagon
Proglucagon is a protein that is cleaved from preproglucagon. Preproglucagon in humans is encoded by the ''GCG'' gene.
Proglucagon is a precursor of glucagon, and several other components. It is generated in the alpha cells of the pancreas and in ...
, a protein
*GCG (General Computer Group) was collection of programs for the analysis of gene and protein sequences, now defunct
;Medical
*
Ghost cell glaucoma
Ghost cell glaucoma (GCG) is a type of secondary glaucoma occurs due to long standing vitreous hemorrhage. The rigid and less pliable degenerated red blood cells (ghost cells) block the trabecular meshwork and increase the pressure inside eyes.
...
;Other
*
Gallantry Cross, Gold
The Gallantry Cross, Gold was instituted by the President of the Republic of Venda in 1985, for award to all ranks for extreme courage or supreme bravery or valour beyond the normal call of duty. of the Republic of Venda
*
Geological Curators' Group
The Geological Curators' Group (GCG) is a United Kingdom-based registered charity and a membership organisation. GCG's aims are, "to advance the education of the public in geology in particular by improving the standard of geological curation and ...
, a UK charity promoting geology
*
Global Church of God, a Sabbatarian church based in England
*
Government College Gujranwala, in Pakistan
*
The Grilled Cheese Grill
The Grilled Cheese Grill is a restaurant focusing on gourmet grilled cheese sandwiches in Portland, Oregon, United States. Established in 2009, the restaurant became known for its highly successful food carts. The owners announced they would not ...
, an American restaurant chain
*
Guardian Capital Group, a Canadian financial services company
*
Gwaun-Cae-Gurwen, a village in Neath Port Talbot, Wales
*
Knight Grand Cross of the Royal Guelphic Order, a Hanoverian order of chivalry
{{disambiguation