FOAS
| Acronym | Definition |
|---|---|
| FOAS | Fraction of a Second (time measurement) |
| FOAS | Future Offensive Air System |
| FOAS | Fiber Optic Acoustic Sensors (Northrop Grumman) |
| FOAS | First Order Abstract Syntax (computing) |
| FOAS | Fall of Autumn Skies (band; Australia) |
| FOAS | Friends of Albert Schweitzer (England, UK) |
| FOAS | Footsteps of a Stranger (song) |
| FOAS | Friends of the Animal Shelter of St. Bernard, Inc. (Chalmette, LA) |