| CTIS | Center for Transportation 
| Others |
| CTIS | Center for Transportation Infrastructure and Safety
| Others |
| CTIS | Central Tire Inflator System
| Others |
| CTIS | Central Tyre Inflation System
| Others |
| CTIS | Centre for Translation and Intercultural Studies
| Others |
| CTIS | Clinical Translational Imaging Science
| Others |
| CTIS | Collaborative Tracing Information Service
| Others |
| CTIS | Combat Terrain Information System
| Others |
| CTIS | Combat Terrain Information Systems
| Others |
| CTIS | Computer Technology and Information Systems
| Others |
| CTIS | Computing Technology and Information Systems
| Others |
| CTIS | Consolidated Trading and Information System
| Others |
| CTIS | Corporate Technical Information System
| Others |
| CTIS | Crawler Transporter Intercom System
| Others |
| CTIS | Critical Thinking In Sexuality
| Others |