FDR (disambiguation)
- FDR
- FDR (software)
- FDR (video game)
- FDR Drive
- FNET
- False discovery rate
- Fan Death Records
- Felix McTeigue
- Finnish Democratic Republic
- Flight data recorder
- Fluid Dynamics Research
- Fonciere des Regions
- Foundation for Democratic Reforms
- Franklin Delano Romanowski
- Franklin Delano Roosevelt III
- Franklin Delano Roosevelt Jr.
- Frederick Regional Airport
- Freedomain Radio
- Front for Democracy and the Republic
- Full depth recycling
- InfiniBand
- People's Democratic Front (Indonesia)
- Revolutionary Democratic Front