MH
- .mh
- County Meath
- Gymnasium (school)
- Hour
- List of Latin-script digraphs
- MH (album)
- MH Message Handling System
- MIT Mystery Hunt
- Mahalle
- Maharashtra
- Malaysia Airlines
- Malignant hyperthermia
- Marble Hornets
- Marques Houston
- Marshall Islands
- Marshallese language
- Masked hypertension
- Master of Humanities
- Medal of Honor (disambiguation)
- Menntaskólinn við Hamrahlíð
- Mental health
- Metal-halide lamp
- Meter second
- Metre per hour
- Miami Heat
- Michael Hood
- Michael Hutchence
- Millihenry
- Mohammad Hatta
- Monster High
- Monster Hunter
- Montserrat
- Morgan Hill, California
- Mount Hood Railroad
- Unified Soil Classification System