| Acronym | Definition |
|---|
| FOTS | Fruit of the Spirit |
| FOTS | Food on the Stove |
| FOTS | First of the Season (birding) |
| FOTS | Freak out the Squares (Newtown Square, PA) |
| FOTS | Fiber Optic Transmission Systems |
| FOTS | Fiber-Optic Transmission System |
| FOTS | Fellowship of the Spirit |
| FOTS | Formal Techniques in Software Engineering |
| FOTS | Feet on the Street (sales representatives) |
| FOTS | Fellowship of the Sun (fictional anti-Vampire group) |
| FOTS | Friends of the Sea (marine preservation group) |
| FOTS | Follow-On to SMAW (Shoulder-Launched Multipurpose Assault Weapon) |
| FOTS | Follow On Technical Support |
| FOTS | Forward Observer Training System (US DoD) |
| FOTS | Female of the Species (Usenet) |
| FOTS | For Old Time's Sake |
| FOTS | Friends of the Shop (Lakewood, CO) |
| FOTS | Fiber Optic Transmission Simulator |
| FOTS | fluoroctatrichlorosilane |
| FOTS | First on the Scene (St John Ambulance textbook) |
| FOTS | Friends of Tynemouth Station (UK) |
| FOTS | Fired on the Spot |
| FOTS | Friends of Treetops School (UK) |