Stylianos Mavromichalis (Greek: Στυλιανός Μαυρομιχάλης) (1899 – 29 October 1981) was a Greek politician and prime minister.^[1][2]

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Born in Mani, Mavromichalis was a descendant of Petros Mavromichalis, who participated in the Greek War of Independence.

Mavromichalis studied law and was president of the Areopagus (court of cassation; Greek: Άρειος Πάγος), the Supreme Court of Greece.^[3] He was prime minister for a very short period, from 29 September to 8 November 1963, of a transitional government.^[4] He died in Athens on October 29, 1981.