| Term | Full Form | Category |
|---|---|---|
| LFSI | Leeds Financial Services Initiative | Others |
| LFSI | Life Formula Synergy Incorporated | Others |
| LFSI | Linear fractional shift invariant | Others |
| LFSI | LOGS Financial Services Inc | Others |
| LFSI | Loquendo Free Speech Identification | Others |
| LFSI | Low Friction Spring Insulator | Others |
| LFSI | St. Dizier, S-France | Others |