Prince Michał Serwacy Wiśniowiecki (Lithuanian: Mykolas Vyšnioveckis) (1680–1744) was a Polish-Lithuanian szlachcic of Gediminid origin.
Lithuanian Field Hetman in 1702-1703 and 1707–1735, Castellan of Vilnius from 1703, Great Hetman of Lithuania in 1703-1707 and again in 1735. Regimentarz of the Lithuanian army since 1730. Voivode of Vilnius 1706-1707 and 1735. Several times was marshall of the Lithuanian Tribunal. Great Chancellor of Lithuania from 1720. Marshal of the Sejm (nadzwyczajnego) from 11 June to 19 August 1703 in Lublin. Starosta of Pińsk, Wołkowysk, Gliniany, Tuchola, Wilkisk, Wilkowsk, Metel and Merecz. During Civil war in Lithuania in 1700 was leader of the opposition against Sapieha clan and defeated them in the battle of Olkieniki, reducing their Ruzhany Palace to ashes. Supporter of Augustus II the Strong till 1707, when camed on the side of Stanisław Leszczyński. In the same year imprisoned by the Russians, since 1709 was on exile. In 1716, when accepted rule of Augustus II the Strong, camed back. In 1733 supported Russian intervention and election of Augustus III on 12 September.
His burial ceremony in Wiśnicz is considered as the most lavish of the 18th century in Poland.