| Acronym | Definition |
|---|
| GCN | Government Computer News |
| GCN | Gamecube Nintendo (gaming) |
| GCN | GIG (Global Information Grid) Computing Nodes |
| GCN | Grand Canyon National Park (Amtrak station code; Arizona) |
| GCN | Graphic Core Next (Advanced Micro Devices, Inc.) |
| GCN | Global Communications Network |
| GCN | Gay Christian Network |
| GCN | Girl Child Network (Zimbabwe) |
| GCN | Gamma-Ray Coordinates Network (US NASA) |
| GCN | Gay City News (website) |
| GCN | Global Compliance Network |
| GCN | Greatest Conservation Need (various locations) |
| GCN | Gospel Communications Network |
| GCN | Great Crested Newt (newt species) |
| GCN | Génie Civil Nucléaire (French: Nuclear Engineering) |
| GCN | Gamma-Ray Burst Coordinates Network |
| GCN | GRB Coordinates Network |
| GCN | Grand Canyon, AZ, USA (Airport Code) |
| GCN | Government Communication Network |
| GCN | Games Creators Network (France) |
| GCN | Gruppo di Coordinamento News-IT |
| GCN | Global Communications Network, LLC |
| GCN | GoConnect Limited (Australia) |
| GCN | Ground Communications Network |
| GCN | Guest Choice Network |
| GCN | Grid Computing Now |
| GCN | Global Citizen Network (Japan) |
| GCN | Game Central Network (website) |
| GCN | Goliad Community Network |
| GCN | Green Consumer Network (South Korea) |
| GCN | Genesys Contact Navigator |
| GCN | God Came Near (Max Lucado book) |
| GCN | Gold Country Network |
| GCN | Grasshopper Club Niederhasli (soccer training camp near Zurich) |
| GCN | Germ Cell Necrosis |