DMST can refer to:
The Drypool and Marfleet Steam Tramways, 19th century steam tram company in Kingston upon Hull, UK Domestic Minor Sex Trafficking, a form of child prostitution The Department of Military Science & Tactics, a department at various Philippines educational institutes including University of the Philippines University of Santo Tomas, Mapua Institute of Technology Reserve Officers' Training Corps University of the Philippines Diliman Do Make Say Think, Canadian music band