FID
# FID

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
* FID, the country code used by FIDE
* 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
