MMX
MMX may refer to:

2010, in Roman numerals

Science and technology
MMX (instruction set), a single-instruction, multiple-data instruction set designed by Intel
MMX Mineração, a Brazilian mining company
Martian Moons eXploration, a Japanese mission to retrieve samples from Mars' moon Phobos
Michelson–Morley experiment, an 1887 physics experiment

Places
MMX Open Art Venue, in Berlin, Germany
Malmö Airport, Sweden (IATA code)

Arts and entertainment
Music
"MMX (The Social Song)", a 2010 song by Enigma
MMX (Twelfth Night album), 2010
Napalm (album), original working title MMX, a 2012 album by Xzibit
MMX, a 2012 album by Procol Harum
MMX, a 2010 album by War from a Harlots Mouth
Marble Machine X, a musical instrument designed by Swedish band Wintergatan

Video games
Mega Man X, a series of video games, and its main character
Might & Magic X: Legacy, a 2014 role-playing video game