| CITT | Canadian Institute for Theatre Technology 
| Others |
| CITT | Canadian Institute of Theatre Technology
| Others |
| CITT | Canadian Institute of Traffic and Transportation
| Others |
| CITT | Canadian International Trade Tribunal
| Others |
| CITT | Carbon Infrastructure Transformation Tool
| Others |
| CITT | Center for Innovative Teaching and Technology
| Others |
| CITT | Center for International Trade and Transportation
| Others |
| CITT | Certificate in Teaching Techniques
| Others |
| CITT | Cheese in the Trap
| Others |
| CITT | Child Improvement Through Therapy
| Others |
| CITT | Citizen's Independent Transportation Trust
| Others |
| CITT | Citizens Independent Transportation Trust
| Others |
| CITT | Citizens' Independent Transportation Trust
| Others |
| CITT | Communications and Information Technology Training
| Others |
| CITT | Compact Implementation Technical Team
| Others |
| CITT | Controlling Interest Transfer Tax
| Others |
| CITT | Convergence Insufficiency Treatment Trial
| Others |