| Acronym | Definition |
|---|
| REC | Record |
| REC | Recreation |
| REC | Receiving |
| REC | Receive (telecommunications) |
| REC | Receiver |
| REC | Recorder |
| REC | Receipt(s) |
| REC | Recruit |
| REC | Recycle |
| REC | Rectifier |
| REC | Reckoning |
| REC | Regional Environmental Center |
| REC | Research Ethics Committee |
| REC | Recruitment and Employment Confederation (UK) |
| REC | Rural Electric Cooperative |
| REC | Renewable Energy Credit |
| REC | Renewable Energy Certificate |
| REC | Renewable Energy Corporation ASA (Sandvika, Norway) |
| REC | Regional Economic Communities |
| REC | Rural Electrification Corporation (India) |
| REC | Reformed Episcopal Church |
| REC | Regional Engineering College |
| REC | Revenue Estimating Conference |
| REC | Republican Executive Committee |
| REC | Respiratory Epithelial Cells |
| REC | Regional Examination Center (US Coast Guard) |
| REC | Record of Environmental Consideration |
| REC | Recognized Environmental Condition (environmental, geoscience, and engineering) |
| REC | Revue Electronique de Communication |
| REC | Regional Electricity Company |
| REC | Renal Epithelial Cells |
| REC | Rescue Emergency Care (Ireland) |
| REC | Renewable Energy Cheaper Than Coal |
| REC | Remote Encoding Center |
| REC | Rural Electrification Corporation Ltd (India) |
| REC | Regional Environmental Coordinator |
| REC | Regional Emergency Coordinator |
| REC | Radio Electronic Combat |
| REC | Recife, Pernambuco, Brazil - Guararapes International (Airport Code) |
| REC | Renaissance Electronics Corp (Harvard, Massachusetts) |
| REC | RECeive Alarm |
| REC | Rare-Earth Cobalt |
| REC | Recollections in Christianity (Sacramento, California) |
| REC | Rabbit Ear Chamber |
| REC | Regional Energy Commission (Russia) |
| REC | Request for Engineering Change |
| REC | Recommender Systems in e-Commerce |
| REC | Réduction d'Emissions Certifiée (French) |
| REC | Roll Eccentricity Compensation (mills) |
| REC | Record of Environmental Compliance |
| REC | Regional Evaluation Center |
| REC | Random Environment Contest (Robot Battle tournament) |
| REC | Reinsurance Earned Commissions (insurance) |
| REC | Subsafe Re-Entry Control |
| REC | Right-Edge Cell |