| Acronym | Definition |
|---|
| LTSF➣Long Term Storage Facility (hazardous materials) |
| LTSF➣Long-Term Strategic Framework (various organizations) |
| LTSF➣Low-Temperature Steam and Formaldehyde |
| LTSF➣Lawrence Township School Foundation (Indianapolis, IN) |
| LTSF➣Little Thompson Science Foundation (est. 1996) |