IRTF
| Acronym | Definition |
|---|---|
| IRTF | Internet Research Task Force |
| IRTF | Infrared Telescope Facility (NASA) |
| IRTF | NASA Infrared Telescope Facility (Mauna Kea, Hawaii) |
| IRTF | Immediate Reaction Task Force |
| IRTF | Individual Returns Transaction File |
| IRTF | International Radio & Television Foundation, Inc. |