Its
- IT (disambiguation)
- Identity, Tradition, Sovereignty
- Illinois Traction System
- Improvisational Tribal Style
- Incompatible Timesharing System
- Indian Telecommunication Service
- Indian Theological Seminary
- Indian Trade Service
- Individualists Tending to the Wild
- Industrial Tomography Systems
- Institute for Transport Studies, University of Leeds
- Institute of Technological Studies
- Institute of Technology, Sligo
- Institute of Transportation Studies
- Integrated Truss Structure
- Intelligent transportation system
- Intelligent tutoring system
- Internal transcribed spacer
- International Temperature Scale of 1990
- International Thespian Society
- International Tracing Service
- International Transportation Service
- International Typographers' Secretariat
- International trade secretariat
- Internationalization Tag Set
- Interplanetary Transport System
- Interrupted time series
- Inverse transform sampling
- Irish Texts Society
- Irish Thoracic Society
- Islamic Texts Society
- Islamic Thinkers Society
- Issue tracking system
- It's
- It's (EP)
- Its (pronoun)
- Itsekiri language
- List of airline codes (I)
- Network 10
- Sepuluh Nopember Institute of Technology