MMP may stand for:

• Mixed Member Proportional electoral system.
• Matrix metalloproteinase enzymes.
• Massively multiprocessing, a computer term used to distinguish symmetric multiprocessing (SMP) systems using tens of processors from those typically using 2-10 (roughly speaking).
• Main Manufacturing Process (MMP) - TRIZ term.
• The Minuteman Project, a 2005 protest/action in the United States southwest to secure the border and protest illegal immigration.
• Massively Multiplayer, a type of online game of which MMORPGs are an example.
• Metal Mind Productions, a Polish music label