MMX may refer to:
- 2010, in Roman numerals
- MMX (instruction set), a single-instruction, multiple-data instruction set designed by Intel
- MMX, an album by rapper Xzibit that had been delayed to 2011 and thus was renamed as MMXI
- MMX (Twelfth Night album), a 2010 album by Twelfth Night
- MMX (War from a Harlots Mouth album), a 2010 album by War from a Harlots Mouth
- MMX Mineração, a Brazilian mining company
- MMX Open Art Venue, an art gallery in Berlin
- Malmö Airport, an airport in Sweden (IATA airport code)
- Martian Moons eXploration, a proposed mission to retrieve samples from the Martian moon Phobos
- Mega Man X, a series of video games produced by Capcom, and the eponymous main character of the series
- Michelson–Morley experiment, the 1887 experiment attempting to find evidence of the luminiferous aether
- Might & Magic X: Legacy, a 2014 video role-playing game in the Might & Magic series
disambiguation page lists articles associated with the title MMX.
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