| Acronym | Definition |
|---|
| FTSI | Federation of Table Soccer, India |
| FTSI | Fujitsu Technology Solutions, Inc. (Sunnyvale, CA) |
| FTSI | Ford Technologies Services India |
| FTSI | Facility Technology Services, Inc. (Virginia) |
| FTSI | Fisher Technical Services, Inc. (est. 1996; Las Vegas, NV) |
| FTSI | Fluid Thermal Structures Interaction (engineering) |
| FTSI | Federal Technology Solutions, Inc. (Irvine, CA) |
| FTSI | Fujitsu Technology Solutions International (Munich, Germany) |
| FTSI | Freight Transportation Services Index (United States Bureau of Transportation Statistics) |
| FTSI | Financial Times Share Index |