FK
- fK – (s) Femtokelvin
- FK – (s) Falkland Islands (ISO 3166 digram; FIPS 10-4 territory code)
- f.k.a. or F/K/A – (i) Formerly Known As
- FKP – (s) Falkland Islands pound (ISO 4217 currency code)
- FKSM – (i) Fort Knox Supplemental Manual
Read more about this topic: List Of Acronyms And Initialisms: F