RMT or R.M.T. may refer to:
Business and organizations RMT (trade union), in the UK Redcliffe Musical Theatre, a theater company in Queensland, Australia Regie voor Maritiem Transport, a former Belgian ferry company Régiment de marche du Tchad, a unit of the French Army Reverse Morris Trust, a US procedure for mergers
People Ruth Mary Tristram (1886–1950), British amateur botanist Rhian Touyz (1959–), Canadian medical researcher RmT Sambandham (1934–2007), Indian newspaper editor
Medicine and science Radioactive Microsphere Therapy (RMT), for treating Neuroendocrine tumors Random matrix theory, a subject of mathematics Recovered-memory therapy Registered Massage Therapist Remedial massage therapist Relational models theory, of interpersonal relationships
Transportation Rimatara Airport (IATA code RMT), Rimitara, French Polynesia Rule Making Task, EASA aeronautical abbreviation RMT Bateleur, German aircraft Review of Maritime Transport, UN
Other uses RateMyTeachers, a Web site Real-money trading, a (typically forbidden) practice in online gaming RMT Records, Milwaukee, Wisconsin, US