HMS

'HMS' is a three-letter acronym that may stand for:

★ Handheld, Manpack, Small Form Factor radio transceivers in the United States' military Joint Tactical Radio System

★ Hans Majestäts Skepp (His Majesty's ship) or Hennes Majestäts Skepp (Her Majesty's Ship), the prefix of Royal Swedish Navy ship names

★ Her Majesty's Ship or His Majesty's Ship or Submarine, the prefix of Royal Navy ship names

★ Her Majesty's Station or His Majesty's Station, the prefix of Royal Navy base names

★ Hellenic Mathematical Society, a Greek learned society

★ Halb Mastwurf Sicherung, a knot also called a Munter hitch, and the type of carabiner used with it

★ Harakat Mujtama' as-Silm (Movement of Society for Peace), an Algerian Islamist political party

★ Harvard Medical School

★ Haslemere Musical Society

★ Hazardous materials safety

★ Headend management station

★ Health monitoring system

★ Heavy melting scrap

★ Helmet-mounted sight

★ National Rail station code of Helmsdale railway station, Scotland

★ Hero-Martyr Syndrome

★ Hidden Markov source in statistical modelling

★ Highly migratory species

★ High Mountain Software

★ High Mowing School, a private coeducational Waldorf boarding school located in Wilton, New Hampshire

★ High melting scrap

★ Hind Mazdoor Sabha, a trade union in India

★ Historical Maritime Society, a British naval reenactment society

★ Historical Metallurgy Society

★ Home media server

★ Hour-Minute-Second

★ Hull mounted sonar

★ Hybrid management sublayer
Management systems:

★ Handheld management system

★ Harvesting management system

★ Hazard management system

★ Holonic manufacturing system

★ Home management system

★ Hospital management system

★
★ Hospital Management System for IIT Bombay

★ Hotel management system

★ Hypertext management system
Middle schools:

★ Hamden Middle School, Hamden, Connecticut

★ Hempstead Middle School, Hempstead, Texas

★ Henry E. Huntington Middle School, San Marino, California

★ Henry Middle School, Leander, TX, also known as Artie Henry Middle School

★ Heritage Middle School, Minnesota

★ Herricks Middle School, Albertson, New York.

★ Highland Middle School, Libertyville, Illinois

★ Hopewell Middle School, Georgia

★ Horton Middle School, Pittsboro, NC