RIHA
| Acronym | Definition |
|---|---|
| RIHA | Riigi Infosüsteemi Haldussüsteem (Estonian: State Information System Management System) |
| RIHA | Research Institute for Housing America |
| RIHA | Roanoke Island Historical Association (North Carolina, USA) |
| RIHA | Rock Island Housing Authority (Illinois) |
| RIHA | Réseau Indépendant d'Hébergeurs Autogerés |
| RIHA | Rush Institute for Healthy Aging |
| RIHA | Rhode Island Herpetological Association |