Prince Michal Serwacy Wisniowiecki (Lithuanian: Mykolas Servacijus Višnioveckis) (1680–1744) was a Polish-Lithuanian nobleman, magnate, politician, diplomat, general, a successful military commander and the last male representative of the Wisniowiecki family.He was the Lithuanian Field Hetman in 1703 and between 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 between 1706-1707 and 1735 and marshal of the Lithuanian Tribunal.
Great Chancellor of Lithuania from 1720, Marshal of the Sejm from 11 June to 19 August 1703 in Lublin and Governor of Pinsk, Vawkavysk, Hlyniany, Tuchola, Wilkisk, Wilkowsk, Metel and Merkine.During Civil war in Lithuania in 1700 Wisniowiecki was the leader of the opposition against Sapieha clan and defeated them in the battle of Olkieniki, turning their Ruzhany Palace to ashes.
Supporter of Augustus II the Strong till 1707, when came on the side of Stanislaw I Leszczynski.
In the same year imprisoned by the Russians, since 1709 was on exile.
In 1716, when accepted rule of Augustus II the Strong, returned to the country.
In 1733 he supported the Russian intervention and forced election of Augustus III.Wisniowiecki was one of the wealthiest magnates in the Polish-Lithuanian Commonwealth and his burial ceremony in Wisniowiec is considered as the most lavish of the 18th century in Poland.