| Acronym | Definition |
|---|
| CTIS | Central Tire Inflation System |
| CTIS | Capital Technology Information Services (Maryland) |
| CTIS | California Teratogen Information Service |
| CTIS | Certified Travel Industry Specialist |
| CTIS | Combat Terrain Information System |
| CTIS | Computed Tomography Imaging Spectrometer |
| CTIS | Churches Together in Sidcup (Sidcup, UK) |
| CTIS | Command Tactical Information System (Pacific Command) |
| CTIS | California Transportation Investment System |
| CTIS | Curriculum Technology Integration Specialist |
| CTIS | Crawler Transporter Intercom System (NASA) |
| CTIS | Corporate Technical Information System (Ford Motor Company) |
| CTIS | Clinical Trials Information System |
| CTIS | Cable Television Installation and Service |
| CTIS | Cable Television Installation & Service (Tampa, FL) |
| CTIS | Commissioned Time in Service |
| CTIS | Certified Timber Infestation Surveyor |