FID
Appearance
FID or fid may refer to:
- Elizabeth Field (Suffolk County, New York), US, IATA code
- Fid, a hollow spike for use in ropework
- The Fid, a mountain in Antarctica
- F.I.D. (album), by Masami Akita
- Financial institutions duty, an Australian tax
- Flame ionization detector
- Flight initiation distance
- Foreign internal defense
- Free induction decay
- Fréchet inception distance, image quality metric
- International Federation for Information and Documentation
- Focus-image distance in projectional radiography
- Stop the Decline (Italian: Fermare il Declino), an Italian political party