MI8 or MI-8 may refer to: AMD's MI8, a brand of deep learning oriented Graphics Processing Units, see Radeon Instinct MI8, the World War II British signals intelligence agency Mil Mi-8, the Soviet-designed helicopter Mitten im 8en, an Austrian TV soap/comedy series Black Chamber, the United States' first peacetime cryptanalytic organization M-8 (Michigan highway) Xiaomi Mi 8, smartphone developed by Xiaomi Mission: Impossible – Dead Reckoning Part Two, an upcoming spy-thriller film starring Tom Cruise