| Acronym | Definition |
|---|
| RIES | Rijnland Internet Election System (Netherlands; expatriate voter system) |
| RIES | Research Institute for Electronic Science (Hakkaido University; Sapporo, Japan) |
| RIES | Reset Internet Explorer Settings (Microsoft) |
| RIES | Revised Impact of Events Scale |
| RIES | Revue Internationale d'Education de Sèvres (French: International Review of Education Sevres; journal) |
| RIES | Réseau International d'Energies Solaires (French: International Network of Solar Energy) |
| RIES | Revised Internal-External Scale (brain injury) |