| Acronym | Definition |
|---|
| GCMS | Global Case Management System (Citizenship and Immigration Canada) |
| GCMS | Gas Chromatograph Mass Spectrometer |
| GCMS | Global Capital Market Solutions (Denmark) |
| GCMS | Government Contractor Monitoring Station |
| GCMS | Global Communication Management System (Sajan, Inc.) |
| GCMS | Gas Chromatography Coupled Mass Spectroscopy |
| GCMS | Glacier Creek Middle School (Middleton, WI) |
| GCMS | Gauger Cobbs Middle School (Delaware, USA) |
| GCMS | Government Configuration Management System |
| GCMS | Gold Coast Montessori School (Gold Coast, Australia) |