| Abbreviation | Definition |
|---|---|
| RMBR | Raffles Museum of Biodiversity Research |
| RMCA | Redtory Museum of Contemporary Art |
| RMCA | Royal Museum for Central Africa |
| RMDO | Regional Museums Development Officer |
| RMLI | Railroad Museum of Long Island |
| RMOP | Railroad Museum of Pennsylvania |
| RMPM | Robert Mouawad Private Museum |
| RMPO | Resources for Museum Professionals Online |
| RMSC | Rochester Museum and Science Center |
| RMV | Rijksmuseum voor Volkenkunde |
| RNHM | Regional Natural History Museum |
| RNRM | Royal Norfolk Regimental Museum |
| ROM | Royal Ontario Museum |
| RPAG | Rolling Plains Art Gallery (Plains Art Museum; Fargo, ND) |
| RPT | Reprint |
| RRL | Rock & Roll Library |
| RTM | Rail Transport Museum |
| RTMP | Royal Tyrrell Museum of Palaeontology |
| RWB | Red, White, and Blue Fire Museum |
| SA | Societe Anonyme |