MMP is a three letter acronym that may refer to:
- Mixed member proportional representation, a voting system
- Mass market paperback, bookbinding format
- Matrix metalloproteinase enzymes
- Massively Multi-Player, a type of online game
- Massively multiprocessing, large symmetric multiprocessing (SMP) computer systems
- Metal Mind Productions, Polish music label
- Methuselah Mouse Prize, for research into slowing cellular aging
- Minuteman Project, 2005 action to deter illegal immigration
- Manitoba Marijuana Party, now Freedom Party of Manitoba, a Canadian political party
- Moldova Metallurgical Plant, see Moldova Steel Works
- Multi-Man Publishing, a wargame company
- Minute Maid Park, a ballpark in Houston, Texas, United States
- Millennium Mathematics Project, of the University of Cambridge
- Miss Moneypenny, James Bond's secretary
- International Organization of Masters, Mates & Pilots (MM&P), maritime labor union
- Tokyo Mew Mew, also known as Mew Mew Power, a Japanese cartoon
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