| CSTI | California Specialized Training Institute 
| Others |
| CSTI | California Specialized Training Institute California Specialized
| Others |
| CSTI | Center for Sustainable Transportation Infrastructure
| Others |
| CSTI | Chittagong Science Technology Institute
| Others |
| CSTI | Christian Service Training Institute
| Others |
| CSTI | Company Service Technical Instruction
| Others |
| CSTI | Computer and Software Training Inc
| Others |
| CSTI | Control ST Bus Input signal
| Others |
| CSTI | Cyprus Sustainable Tourism Initiative
| Others |