| Acronym | Definition |
|---|
| COSTEP➣Council for South Texas Economic Progress |
| COSTEP➣Communicators in Science and Technology Education Program (Sapporo, Japan) |
| COSTEP➣Commissioned Officer Student Training Extern Program (US Public Health Service) |
| COSTEP➣Congress on Software Technology and Engineering Practice |
| COSTEP➣Comprehensive Supra Thermal and Energetic Particle Analyzer |