| Acronym | Definition |
|---|
| RSSM➣Rail Security-Sensitive Materials (Shipment) |
| RSSM➣Research in Social Stratification and Mobility (journal) |
| RSSM➣Republica Sovietica Socialista Moldoveneasca (Romanian: Moldavian Soviet Socialist Republic) |
| RSSM➣Rose Society of Saddleback Mountain (California) |
| RSSM➣Richie Sambora Signature Model (acoustic guitar) |
| RSSM➣Rusty Stumps Scale Models (railroading; Fishers, IN) |