RSM may refer to:
Companies RSM Global, worldwide accountancy & professional services network RSM US, a tax, accounting and consulting firm based in Chicago RSM UK RSM Singapore RSM Tenon, defunct professional services network in the UK RSM Robson Rhodes, defunct professional services network in the UK Reliable Source Music, an independent production music company Renault Samsung Motors, a South Korean motor manufacturer
Institutions Rotterdam School of Management (RSM Erasmus University), the business school of Erasmus University, Rotterdam Royal Saskatchewan Museum, a museum in Regina, Saskatchewan Royal School of Mines, an institute of higher education in London, England Royal Society of Medicine, a British medical society Russian School of Mathematics, an after-school mathematical education program based in Massachusetts
Other organizations Radioamaterski Sojuz na Makedonija, an amateur radio organization in the Republic of Macedonia Religious Order of the Sisters of Mercy, an order of Catholic women Rete degli Studenti Medi, Italian High School and VET student union Russian Socialist Movement, a socialist political party in Russia Rassemblement Saint-Martinois, a political party in Saint Martin Rashtriya Sanjay Manch, a political party in India
Military Regimental sergeant major a warrant officer appointment in the British and most Commonwealth armies and the Royal Marines Resolute Support Mission, a NATO mission in Afghanistan from the end of 2014 Radio Squadron, Mobile, signal intelligence squadrons of the United States Air Force Security Service
Places Rancho Santa Margarita, California, a city in California Republic of San Marino, a country in southern Europe Vehicle registration plates of San Marino
Science and technology Rating scale model, a model used in Item Response Theory Reciprocal Space Map, a crystallographic method Response surface methodology, sequential experimentation for improvement and for finding an optimal response Reynolds stress model, a method in Computational fluid dynamics for modeling turbulence Route Switch Module, a component of a powered device that provides network routing services RNA-targeting small molecule drugs, a class of organic compounds with traditional drug properties
Other uses R. Stevie Moore (born 1952), American singer-songwriter Robert McNamara (1916–2009), American businessman and government official Rolling Stones Mobile Studio, a mobile recording studio