| M&H | Mann and Hummel 
| Others |
| M/H | Man Hour
| Others |
| M/H | Meters Per Hour
| Others |
| M/H | Multi-handicapped
| Others |
| MH | Mad Hatters
| Others |
| MH | Magic Hearts
| Others |
| MH | Magnetic Heading
| Others |
| MH | Maharashtra
| State |
| MH | Mail Handler
| Others |
| MH | Maintenance Hemodialysis
| Others |
| MH | Maintenance Hole (non-gender specific rendition of manhole)
| Others |
| MH | Make Header
| Others |
| MH | Malaysia Airlines
| Others |
| MH | Malaysian Airlines
| Others |
| MH | Malaysian hospitality
| Others |
| MH | Maleic Acid
| Others |
| MH | Malignant Histiocytosis
| Others |
| MH | Malignant Hypersensitivity
| Others |
| MH | Malignant Hypertension
| Others |
| MH | Malignant Hyperthermia
| Others |
| MH | Man Hours
| Others |
| MH | ManHole
| Others |
| MH | Mansion House
| Others |
| MH | Manufactured Home
| Others |
| MH | Manufactured Housing
| Others |
| MH | Many Hugs
| Others |
| MH | Map Hack
| Others |
| MH | Marital history
| Others |
| MH | Mark Halvorsen
| Others |
| MH | Mark Heard
| Others |
| MH | Mark Hoppus
| Others |
| MH | Marques Houston
| Others |
| MH | Marr Hildreth
| Others |
| MH | Marshall Islands
| State |
| mh | Marshall Islands (TLD)
| Others |
| MH | Masa Hiraoka, conservationist
| Others |
| MH | Mass Hysteria
| Others |
| MH | Massage Hydrotherapy
| Others |
| MH | Master Help
| Others |
| MH | Master Herbalist
| Others |
| MH | Master Hunter
| Others |
| MH | Master of Herbology
| Others |
| MH | Materials Handler
| Others |
| MH | Mathematics House
| Others |
| MH | Matt Hardy
| Others |
| MH | Matt Harns
| Others |
| MH | Matthew Henry
| Others |
| MH | Matthew Henrys
| Others |
| MH | Maurice Heaton
| Others |
| MH | Maximize Hostility
| Others |
| MH | MCS (Maneuver Control System) Hand-held terminal unit
| Others |
| MH | Mech Hunters
| Others |
| MH | Mechanical Products
| Others |
| MH | Medial Habenula
| Others |
| MH | Medial Hamstring
| Others |
| MH | Medial Hypothalamus
| Others |
| MH | Medical Hold
| Others |
| MH | Medical Humanities
| Others |
| MH | Medicinal Hemp
| Others |
| MH | Mediocre Hunter
| Others |
| MH | Medizinische Hochschule
| Others |
| MH | Medline Header
| Others |
| MH | Meeting House
| Others |
| MH | Mehedinti County, Romania
| Others |
| MH | Melt Head
| Others |
| MH | Member of Hell
| Others |
| MH | Men's Hostel
| Others |
| MH | Menntaskoli Hamrahlidar
| Others |
| MH | Menstrual History
| Others |
| MH | Mental Head
| Others |
| MH | Mental Health
| Others |
| MH | Mental Hospital
| Others |
| MH | Mesenchymal Hamartoma
| Others |
| MH | Mesh Heading
| Others |
| MH | Message Handler
| Others |
| MH | Meta Hypothesis
| Others |
| MH | Metal Halide
| Others |
| MH | Metal Hydride
| Others |
| MH | Metal Hydroxide
| Others |
| MH | Methyl Hydroxyl
| Others |
| MH | Mexican Hat
| Others |
| MH | Meyer Howard
| Others |
| MH | Miami Hurricanes
| Others |
| MH | Michael Humphreys
| Others |
| MH | Microscopic Haematuria
| Others |
| MH | Middle Hitter
| Others |
| MH | Might Happen
| Others |
| MH | Migraine Headache
| Others |
| MH | Mika Hakkinen
| Others |
| MH | Mike Hailwood
| Others |
| MH | Mike Harris
| Others |
| MH | Miku Hatsune
| Others |
| MH | Military Hero
| Others |
| MH | Mill Hill
| Others |
| mH | milliHenry
| Others |
| MH | Mine Hunter
| Others |
| MH | Minimum Hamming
| Others |
| MH | Ministerio de Hacienda
| Others |
| MH | Minor Histocompatibility
| Others |
| MH | Missing Hours
| Others |
| MH | Mister Happy
| Others |
| MH | Mobile Home
| Others |
| MH | Mobile Host
| Others |
| MH | Modified Hinges
| Others |
| MH | Modified Huffman
| Others |
| MH | Modular High
| Others |
| MH | Molecular Hybridisation
| Others |
| MH | Money Honey
| Others |
| MH | Monika And Hanns
| Others |
| MH | Monomoke Hime
| Others |
| MH | Monster Hunter
| Others |
| MH | Montesa Honda
| Others |
| MH | Most Horrible
| Others |
| MH | Mostly Handheld
| Others |
| MH | Mostly Harmless
| Others |
| MH | Motor Home
| Others |
| MH | Motor Hour
| Others |
| MH | Mount Hood Railroad
| Others |
| MH | Mountain Hammock
| Others |
| MH | Ms Harris
| Others |
| MH | Mt. Hood Railroad Company
| Others |
| MH | Mueller-Hinton
| Others |
| MH | Multi Hand
| Others |
| MH | Multi Hardlink
| Others |
| MH | Multi Hazard
| Others |
| MH | Multi Hazards
| Others |
| MH | Multi Homed
| Others |
| MH | Muscle Hypertrophy
| Others |
| MH | Muscular Hypertrophy
| Others |
| MH | Museum and Hall
| Others |
| MH | Music House
| Others |
| MH | Must Have
| Others |
| MH | Myocardial Hypertrophy
| Others |
| MH | Mystery Host
| Others |