IRTI
| Acronym | Definition |
|---|---|
| IRTI | Innovative Rehabilitation Technology, Inc. (est. 1979) |
| IRTI | Islamic Research and Training Institute |
| IRTI | Infrared Thermal Imaging |
| IRTI | International Reformed Theological Institute (Amsterdam, Netherlands) |
| IRTI | Instytut Rozwoju Technologii Informatycznych (Polish: Institute for the Development of Information Technology) |
| IRTI | Integrated Resource Technologies, Inc. (Alexandria, VA) |
| IRTI | Idaho Recreation and Tourism Initiative |
| IRTI | Immigration Reform Transformation Initiative |