| IT'IS | Information Technologies in Society 
| Others |
| ITIS | Income Tax Instalment System
| Others |
| ITIS | Industrial Technology Information Services
| Others |
| ITIS | Industrial Technology Intelligence Services
| Others |
| ITIS | Industry & Technology Intelligence Services
| Others |
| ITIS | Industry Technology Intelligence Services
| Others |
| ITIS | Information Techniques For Irrigation Systems
| Others |
| ITIS | Information Technology In School
| Others |
| ITIS | Information Technology Infrastructure Services
| Others |
| ITIS | Institute Traditional Islamic Studies
| Others |
| ITIS | Integrated Taxonomic Information System
| Others |
| ITIS | Integrated Traffic Information System
| Others |
| ITIS | Integrated Transport Information System
| Others |
| ITIS | Interim Test Item Simulator
| Others |
| ITIS | Internal Trouble In Stomach
| Others |
| ITIS | International Trade Institute of Singapore
| Others |
| ITIS | Internet Technologies and Information Systems
| Others |
| ITIS | Istituto Tecnico Industriale Statale
| Others |