| Term | Full Form | Category |
|---|---|---|
| ITSF | Immune Thymus Suppressor Factor | Others |
| ITSF | Independent Testing Status Form | Others |
| ITSF | Indonesia Toray Science Foundation | Others |
| ITSF | Information Technology Solution Framework | Others |
| ITSF | International Table Soccer Federation | Others |
| ITSF | International Technical Safety Forum | Others |
| ITSF | International Telecom Sync Forum | Others |
| ITSF | International Test Scheduling Form | Others |
| ITSF | International Therapeutic Solidarity Fund | Others |
| ITSF | International Timing Sync Forum | Others |