RF (disambiguation)
- Aero K
- Canon RF mount
- Florida West International Airways
- France
- RF Online
- RFTV
- Radiative forcing
- Radio Nippon
- Random forest
- Range Factor
- Receptive field
- Red Faction (series)
- Regions Financial Corporation
- Registered association (Finland)
- Release factor
- Representative fraction
- Respiratory failure
- Rest frame
- Retardation factor
- Reticular formation
- Rheumatic fever
- Rheumatoid factor
- Rhodesian Front
- Right fielder
- Rinforzando
- Risk factor
- Roger Federer
- Royalty-free
- Russian Federation
- Rutherfordium
- Swedish Sports Confederation