RBF
- Big Bear City Airport
- OS-9
- Radial basis function
- Radial basis function kernel
- Rassemblement Bruxelles-France
- Rat-bite fever
- Reel Big Fish
- Renal blood flow
- Reserve Bank of Fiji
- Restaurant Trade Union
- Resting bitch face
- Revenue based financing
- Rockefeller Brothers Fund
- Rubidium fluoride
- Russian Basketball Federation