Africa 
China 
Japan 
MENA 
- Moment
- Moment closure
- Moment distribution method
- Moment generating function
- Moment magnitude scale
- Moment of inertia
- Moment redistribution
- Moment-generating function
- Moment-resisting frame
- Momentum
- Momentum diffusion
- Momentum space
- Momentum-transfer cross section
- Monads
- Monatomic
- Monatomic gases
- Monazite
- Monazite-(La)
- Monazite-(ce)
- Monazite-(nd)
- Monel
- Monensin
- Monero
- MonetDB
- MongoDB
- Monic polynomial
- Monitor
- Monitoring
- Monitoring and evaluation
- Monkeypox
- Monkeypox virus
- Monoamine
- Monoamine neurotransmitters
- Monoamine oxidase
- Monoamine transporters
- Monobenzone
- Monocalcium phosphate
- Monochloramine
- Monochlorophenol
- Monochromatic light
- Monochromatic radiation
- Monochromatization
- Monochromator
- Monochrome
- Monocline
- Monoclinic
- Monoclinic crystal system
- Monoclonal antibody
- Monoclonal antibody therapy
- Monocoque
- Monocrystalline silicon
- Monocular
- Monocular vision
- Monocytes
- Monod equation
- Monodisperse
- Monodomain model
- Monofluorophosphate
- Monoglycerides
- Monohydrocalcite
- Monohydrogen phosphate
- Monoids
- Monolaurin
- Monolayer doping
- Monolayers
- Monolignols
- Monolithic
- Monolithic column
- Monoliths
- Monomers
- Monomethylhydrazine
- Monomial
- Monomial basis
- Mononuclear cells
- Mononuclear phagocyte system
- Monooxygenases
- Monopole
- Monopole antenna
- Monopropellant
- Monopropellant rocket
- Monopulse radar
- Monorail
- Monosaccharides
- Monosodium glutamate
- Monoterpenes
- Monotone convergence theorem
- Monotonic
- Monotonic function
- Monounsaturated fat
- Monoxide
- Monsoon
- Montan wax
- Monte Carlo localization
- Monte Carlo molecular modeling
- Montmorillonite
- Montreal Cognitive Assessment
- Montroydite
- Monty Hall problem
- Monzodiorite
- Monzogranite
- Monzonite
- Mood board
- Mood lighting
- Mood swings
- Moodle
- Moody chart
- Moore machine
- Moore neighborhood
- Moore's Law
- Moore-Penrose pseudoinverse
- Mooring
- Moose test
- Mop
- Moraine-dammed lakes
- Moraines
- Moran's I
- Mordant
- Mordenite
- Morganella morganii
- Morinda tinctoria
- Morison equation
- Morning sickness
- Morphing
- Morphogenesis
- Morphogens
- Morpholine
- Morpholino
- Morphological analysis
- Morphology
- Morphometric
- Morphometrics
- Morris method
- Morse code
- Morse potential
- Morse theory
- Mortality
- Mortality rate
- Mortar
- Mosaic
- Mosaic plot
- Mosaic virus
- Mosaicity
- Moses
- Mosquito control
- Mosquitoes
- Most recent common ancestor
- Mother liquor
- Motherboard
- Mothers against decapentaplegic
- Mothur