| Acronym | Definition |
|---|
| RES | Resolution |
| RES | Resource (File Name Extension) |
| RES | Resistance (gaming, Diablo 2) |
| RES | Reset |
| RES | Residence |
| RES | Restoration |
| RES | Resurrection (gaming) |
| RES | Research Department (International Monetary Fund) |
| RES | Resistor |
| RES | Real Estate Services |
| RES | Resonator |
| RES | Regional Economic Strategy (UK) |
| RES | Residenz (German: home) |
| RES | Reticuloendothelial System |
| RES | Renewable Energy Source |
| RES | Review of Economic Studies (publication) |
| RES | Radio Equipment and Systems |
| RES | Reticulo-Endothelial System (medicine) |
| RES | Rear Entertainment System (Honda's DVD System) |
| RES | Rothamsted Experimental Station |
| RES | Robots Exclusion Standard |
| RES | Resistencia, Chaco, Argentina (Airport Code) |
| RES | Reference Energy System |
| RES | Rudder Elevator Spoiler |
| RES | Rochester Engineering Society |
| RES | Resolicited (comic book publishing industry preorders) |
| RES | Radar Environment Simulator |
| RES | Reykjavik Eye Study |
| RES | Reentry System |
| RES | Radiation Exposure State |
| RES | Real Estate Supplement (USACE) |
| RES | Reseau d'Entreprises Sociales (French) |
| RES | Ransom-Everglades School (Florida) |
| RES | Radar Environment Simulation |
| RES | Receive-Only Earth Station |
| RES | Radio Equipment System |
| RES | Receiver End System |
| RES | Remote Encoding Site (US Postal Service) |
| RES | Risk Estimate of the Situation |
| RES | Regional Employment Specialist |
| RES | Reimbursable Equipment Schedule |
| RES | Remote Entry Server |
| RES | Range Extension Subsystem |
| RES | Riedel Environmental Services, Inc |
| RES | Reserve Evaluation System |
| RES | Reserve/Reserves/Residence |
| RES | Rosano Electronic Services |
| RES | Rwanda Evaluation Society |