GCL

GCL may refer to:

Computing

 * GNU Common Lisp
 * Guarded Command Language, used for predicate transformer semantics
 * Graphical Command Language of Geomview

Honours

 * Grand Companion of the Order of Logohu, an honour of Papua New Guinea
 * Grand Cross of the Order of Liberty, an honour of Portugal

Science

 * Ganglion cell layer
 * Geosynthetic clay liner
 * Glutamate–cysteine ligase
 * Global coordination level

Sports

 * Golf Club of Lebanon
 * Greater Catholic League, an Ohio high school athletic conference
 * Gulf Coast League, a rookie-level Minor League Baseball league

Transport

 * Glassboro–Camden Line, a proposed light rail line between Camden and Glassboro in New Jersey
 * Gul Circle MRT station, a Mass Rapid Transit station in Tuas, Singapore (MRT station abbreviation)
 * Gulf Coast Lines, a defunct American railway company

Other uses

 * GCL-Poly, Golden Concord Group Limited, a green energy company
 * Government Category List, in the United Kingdom
 * Grenadian Creole English, ISO 639-3 code gcl
 * Griffith College Limerick, in Ireland