ATTI
| Acronym | Definition |
|---|---|
| ATTI | Attitude |
| ATTI | Association of Teachers in Technical Institutions (now National Association of Teachers in Further and Higher Education) |
| ATTI | Advanced Transportation Technology Institute |
| ATTI | Advanced Tracking Technologies, Inc. (est. 1998; Houston, TX) |
| ATTI | Advanced Technology Transfer and Infusion (JPL) |
| ATTI | American Telephone and Telegraph Interchange |
| ATTI | Acoustic Test Target Insertion |