RSSM

AcronymDefinition
RSSMRail Security-Sensitive Materials (Shipment)
RSSMResearch in Social Stratification and Mobility (journal)
RSSMRepublica Sovietica Socialista Moldoveneasca (Romanian: Moldavian Soviet Socialist Republic)
RSSMRose Society of Saddleback Mountain (California)
RSSMRichie Sambora Signature Model (acoustic guitar)
RSSMRusty Stumps Scale Models (railroading; Fishers, IN)