FD

FD can mean:
* Fridays A programing block on Cartoon Network, now known as Fried Dynamite.
* Canon FD lens mount
* Fire department, as in "FDNY"
* full duplex on a network switch
* Flying Dutchman (dinghy)
* The IATA code for Thai AirAsia
* Floppy disk
* Familial dysautonomia
* "Fidei defensor" ("Defender of the faith")
* A third generation Mazda RX-7
* Flight director (aviation)
* Imperial Japanese Army (World War II) Fortified District - a defensive fortified organization in Japanese and Manchukuo-Soviet frontier during the Pacific War period.
* In biology, ferredoxin, a molecule functioning in electron transfer.
* Foundation Degree
* Fog Devils, a QMJHL team based in St. John's.
* In the Unix operating system, file descriptor
* Functional Dependency in a relation from a database
* "Frisky Dingo", an animated show on Adult Swim.
* In a LARP game, it means "final death", or the end of one's character.
* "Final Destination", a horror film franchise centers on teenagers cheating death.
**"Final Destination" (2000)
**"Final Destination 2" (2003)
**"Final Destination 3" (2006)
**"Final Destination 4 (2009)"
* Fort Davis
* Free dance, the third part of an ice dancing competition