| Acronym | Definition |
|---|
| TFSL➣Third Federal Savings and Loan |
| TFSL➣Teaching French as a Second Language |
| TFSL➣The Food Safety Laboratories (Hong Kong) |
| TFSL➣Thompson Financial Services Limited (Lower Hutt, Wellington, New Zealand) |
| TFSL➣The Four Spiritual Laws |
| TFSL➣Thin-Film Superlattice |