| Acronym | Definition |
|---|
| RNF | Rhein-Neckar Fernsehen (German: Rhein-Neckar Television) |
| RNF | Réserves Naturelles de France (French: Natural Reserves of France) |
| RNF | Ring Finger Protein |
| RNF | Record Not Found |
| RNF | Research Network Forum |
| RNF | Reduced Normal Form (computer theory) |
| RNF | Round Nose Fish (surfboard model) |
| RNF | Rann Na Feirste |
| RNF | Revenue Net Fuel |
| RNF | Required New Funds (business planning) |
| RNF | Rural Norfolk Federation |
| RNF | Remote Notes Feeder (C.P. Bourg, Inc.) |
| RNF | Radiography and Fluoroscopy |
| RNF | Remote Number Forward (telecommunications) |