MI-4, MI4, MI 4, or variant may refer to:
MI4, British Military Intelligence Section 4 Mil Mi-4 Michigan's 4th congressional district M-4 (Michigan highway) Mission: Impossible – Ghost Protocol, a 2011 action film starring Tom Cruise Xiaomi Mi 4, an Android smartphone produced by Xiaomi Tech Escape from Monkey Island (also known as Monkey Island 4), videogame