TFSS
| Acronym | Definition |
|---|---|
| TFSS | Toyota Financial Services Securities (various locations) |
| TFSS | Toronto Foundation for Student Success (student advocate organization; Canada) |
| TFSS | Turner Fenton Secondary School (Brampton, Ontario, Canada) |
| TFSS | Technical Field Support Services (Natural Resources Canada) |
| TFSS | Tyco Fire and Security Services (China) |
| TFSS | Thomas-Fermi-Scott-Schwinger |
| TFSS | Type Four Secretion Apparatus (microbiology) |