English abbreviations from gcn to gctuc
- GCN (Gamma-ray burst Coordination Network)
- GCO (Ground Control Operator)
- GCOS (General Comprehensive Operating System)
- GCOVE (Georgia (State)Council of Vocational Education)
- GCP (Ghana Congress Party)
- GCPA (Georgia College Personnel Association)
- GCPP (Great Consolidated Popular Party)
- GCR ((astrophysics terminology) Galactic Cosmic Rays)
- GCRA (Greene County Regional Airport)
- GCRI (General Collective Routing Indicator (RI))
- GCRWA (Gallia County Rural Water Association)
- GCS (Ground Control Station)
- GCSA (Ghana Civil Servants Association)
- GCSC (Global Contingency Service Contract)
- GCSE (General Certificate of Secondary Education (UK))
- GCSI (Gulf Coast Safety Institute)
- GCSS (Global Combat Support System)
- GCSS-J (Global Combat Support System - Joint)
- GCT (Grande Cadence de Tir (high rate of fire))
- GCTE (Georgia Council of Teachers of English)
- GCTI (Government Central Textile Institute (India))
- GCTN (Global Combating Terrorism Network)
- GCTUC (Gold Coast Trades Union Congress)
