MM3

MM3 may refer to:


 * MM3 (force field), a class of force fields in chemistry
 * mm3, a cubic millimetre or microlitre
 * Mm3, a cubic megametre or zettalitre, Litre
 * Mega Man 3, a 1990 video game for the NES
 * Might and Magic III: Isles of Terra, a 1991 video game for the PC and many other platforms
 * Mega Man III (Game Boy), a 1992 video game for the Game Boy
 * Midtown Madness 3, a 2003 video game for the Xbox
 * The Minuteman III intercontinental ballistic missile.
 * MM3 register, a CPU register used by the MMX extension