| Acronym | Definition |
|---|
| HMS➣Hour Minute Second |
| HMS➣Her/His Majesty's Ship (UK) |
| HMS➣Harvard Medical School |
| HMS➣Har Mar Superstar (band) |
| HMS➣Health and Medical Services (various organizations) |
| HMS➣Hendrick Motorsports (NASCAR) |
| HMS➣Heavy Media Separation (mining) |
| HMS➣Handcrafted Model Ships |
| HMS➣Hepatosplenomegaly (disorder) |
| HMS➣Hasemi Motor Sport (Japan) |
| HMS➣Helse Miljø Sikkerhet (Norwegian: Environmental Health Security) |
| HMS➣Hawaiian Monk Seal (mammal) |
| HMS➣Hitachi Medical Systems (various locations) |
| HMS➣Hazardous Materials Section (various locations) |
| HMS➣Headland Management System |
| HMS➣Headend Management System |
| HMS➣Hardware Maintenance Reference Manual |
| HMS➣Hardware Maintenance and Service |
| HMS➣History Memory System |
| HMS➣Hobbs Municipal Schools (New Mexico) |
| HMS➣Homestead-Miami Speedway |
| HMS➣Highly Migratory Species |
| HMS➣Human Movement Studies (various locations) |
| HMS➣Hospital Management System |
| HMS➣Heavy Melting Scrap |
| HMS➣Heritage Middle School (various locations) |
| HMS➣Helmet Mounted Sight |
| HMS➣Hillsborough Middle School (New Jersey) |
| HMS➣Hypermobility Syndrome (rheumatology) |
| HMS➣Hotel Management System |
| HMS➣Hammarskjold Middle School (New Jersey) |
| HMS➣Home Media Server |
| HMS➣Hughes Missile Systems (now Raytheon Company) |
| HMS➣Hospitality Management System |
| HMS➣Hind Mazdoor Sabha (Indian trade union) |
| HMS➣Hull Mounted Sonar |
| HMS➣Hind Mazdoor Sabha (India) |
| HMS➣Healthcare Marketing Services (various locations) |
| HMS➣HalbMastwurfSicherung (German: munter hitch belay) |
| HMS➣Harrison Middle School |
| HMS➣Holonic Manufacturing System |
| HMS➣Heart, Mind and Soul |
| HMS➣Hazardous Materials Safety |
| HMS➣Haim-Munk Syndrome |
| HMS➣Herndon Middle School (Herndon, Virginia) |
| HMS➣Humboldt Merchant Services (account provider; Eureka, CA) |
| HMS➣Healthcare Management System |
| HMS➣Huntington Middle School (California) |
| HMS➣Hard Metal System (Beyblade TV show & toys) |
| HMS➣Holmes Middle School (Colorado Springs, Colorado) |
| HMS➣Hyatt Main Street (hotel) |
| HMS➣Hampton Middle School (Allison Park, Pennsylvania) |
| HMS➣Hosted Managed Service |
| HMS➣Horizontally Meandered Strip (microwave) |
| HMS➣Hart Middle School (Pleasanton, CA) |
| HMS➣Hanford Meteorological Station |
| HMS➣Health Market Science, Inc (King of Prussia, PA) |
| HMS➣Hans/Hennes Majestäts Skepp (Swedish: His/Her Majesty's Ship) |
| HMS➣Hyperreactive Malarial Syndrome (disease) |
| HMS➣Hendersonville Middle School (North Carolina) |
| HMS➣Human-Machine System (ergonomics) |
| HMS➣Hitachi Metals Singapore (Hitachi Metals Group) |
| HMS➣Highway Mobile Source |
| HMS➣Hahira Middle School (Hahira, GA) |
| HMS➣High Melting Scrap |
| HMS➣Hrvatski Motociklisticki Savez (Croatian Motorcycle Federation) |
| HMS➣Hidden Markov Source |
| HMS➣Helpless Man Syndrome |
| HMS➣Head Media Spacing (magnetics) |
| HMS➣His/Her Majesty Ship (UK) |
| HMS➣Headend Management System (Cable TV) |
| HMS➣Hubble Middle School (Wheaton, IL) |
| HMS➣Horace Mann School for the Deaf and Hard of Hearing (est. 1869; Allston, MA) |
| HMS➣Hybrid Management System |
| HMS➣Harden Middle School (California) |
| HMS➣Height Management System (automobile/vehicle systems) |
| HMS➣Hrvatski Macevalacki Savez (Croatian Fencing Federation) |
| HMS➣Hydrogen Mixing Studies |
| HMS➣Her/His Majesty's Service |
| HMS➣Hazlet Middle School (New Jersey, USA) |
| HMS➣Home Media Station (multimedia entertainment) |
| HMS➣Hartman Middle School |
| HMS➣Hanes Middle School (Winston-Salem, North Carolina) |
| HMS➣Harmonie Municipale de Sion |
| HMS➣Hardware Monitoring System |
| HMS➣Hallmark Management Services Inc |
| HMS➣Handheld, Manpack and Small Form Fits (Joint Tactical Rado System Cluster 5) |
| HMS➣Human Safety Mandatory Modification |
| HMS➣Hydro-Meteorological Station |
| HMS➣Hampton Media Services Ltd. (UK) |
| HMS➣Hawken Middle School (Lyndhurst, Ohio) |
| HMS➣Human Metabolic Simulator |
| HMS➣Harakat Mujtamaa As Silm (Movement of the Society for Peace) |
| HMS➣Heavy Materiel Supply |
| HMS➣His/Her Majesty's Submarine/Ship (UK) |
| HMS➣History of Mine Safety |
| HMS➣Hansen Mobile Solutions |