| Acronym | Definition |
|---|
| REF | Reference to |
| REF | Referee (sports) |
| REF | Refer/Reference(s)/Referred |
| REF | Reference (File Name Extension) |
| REF | Research Excellence Framework (Higher Education Funding Council for England; UK) |
| REF | Referring |
| REF | Refugee |
| REF | Refresher |
| REF | Roma Education Fund (est. 2005) |
| REF | Renewable Energy Fund (various organizations) |
| REF | Real Estate Fund (various organizations) |
| REF | Repartition Electronique De Freinage |
| REF | Reference File |
| REF | Regional Executive Forum |
| REF | Réseau des Emetteurs Français (French: Network of French Radio Transmitters; amateur radio club) |
| REF | Rapid Equipping Force |
| REF | Review of Environmental Factors |
| REF | Row Echelon Form (matrix mathematics) |
| REF | Regional Energy Forum |
| REF | Restricted Earth Fault |
| REF | Reduced Echelon Form (linear algebra) |
| REF | Resource Enforcement Function |
| REF | Robotech Expeditionary Forces (Robotech anime) |
| REF | Radio-Engineering Faculty |
| REF | Rapid Equipment Fielding (US Army) |
| REF | Radiant Electric Fire |
| REF | Roseland Education Foundation |
| REF | Research Exploration Framework |
| REF | Rarest Element First (algorithm) |