| Acronym | Definition |
|---|
| ITTO➣International Tropical Timber Organization |
| ITTO➣International Timber Trade Organization (Japan) |
| ITTO➣International Teacher Training Organization |
| ITTO➣Iran Tourism and Touring Organization |
| ITTO➣Inputs Tools Techniques Outputs (/Project Management Methodology) |
| ITTO➣Internet to the Outback (education program; Volunteers for Isolated Students' Education; Australia) |