MHS

• Malibu High School, Malibu, California, US
• Marianas High School, Saipan, CNMI, US
• Marryatville High School, Adelaide, Australia
• Marshwood High School, South Berwick, Maine, US
• Massapequa High School, Massapequa, New York, US
• Matthew Humberstone School, Cleethorpes, England
• Mauldin High School, Mauldin, South Carolina, US
• Leodis V. McDaniel High School, Portland, Oregon, US
• McDonald High School, McDonald, Ohio, US
• McMinnville High School, McMinnville, Oregon, US
• Melbourne High School, Melbourne, Australia
• Milford Haven School, Milford Haven, Wales
• Milpitas High School, Milpitas, California, US
• Moscow High School, Moscow, Idaho, US
• Muscatine High School, Muscatine, Iowa, US
• Marysville High School (disambiguation)
• Milford High School (disambiguation)
• Montpelier High School (disambiguation)

• Air Memphis (ICAO code: MHS), an Egyptian airline
• Ingenuity (helicopter), formerly known as Mars Helicopter Scout
• Master of Health Science, a graduate degree program
• Meadowhall Interchange, a railway station in England, National Rail station code
• Message Handling System, a past Novell email protocol
• Michigan Humane Society, in animal welfare
• Microwave Humidity Sounder, satellite-borne instrument
• Mietshäuser Syndikat, a federated network of collectively owned houses in Germany
• Military Health System, of US DoD
• Modular Handgun System
• Montana Historical Society

• Mental health service (disambiguation)

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