MPX may refer to:

Technology

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  • MPX filter, a function found in cassette decks
  • Multiplexing, the process of combining multiple analog or digital signals into one
    • Multiplexer, an electronic device which accomplishes this task

Computing

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Other uses

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  • MPX Energia, former name of the Brazilian utility company Eneva
  • MPI MPXpress, a train locomotive
  • SIG MPX, a submachine gun from SIG Sauer
  • An abbreviation for mpox, an infectious viral disease