|Coat of arms Leliwa|
Children Maria Zofia Czartoryska
|Noble family Sieniawski family|
|Father Mikołaj Hieronim Sieniawski|
Mother Cecylia Maria Radziwiłł
Died 18 February 1726, Lviv, Ukraine
Spouse Elżbieta Sieniawska (m. 1687)
Parents Mikołaj Hieronim Sieniawski, Cecylia Maria Radziwiłł
Grandchildren Adam Kazimierz Czartoryski, Elżbieta Czartoryska
Similar Mikołaj Hieronim Sieniawski, Elżbieta Sieniawska, Maria Zofia Czartoryska, August Aleksander Czartoryski, Stanisław Ernest Denhoff
Adam Mikołaj Sieniawski (1666–1726) was a Polish noble (szlachcic), military leader.
Son of Hetman Mikołaj Hieronim Sieniawski and the daughter of Court and Grand Marshal Prince Aleksander Ludwik Radziwiłł, Princess Cecylia Maria Radziwiłł, He married Elżbieta Lubomirska, daughter of Court and Grand Marshal Prince Stanisław Herakliusz Lubomirski, in 1687.
He was voivode of Bełz Voivodeship from 1692 to 1710, Field Crown Hetman since 1702, Great Crown Hetman since 1706, Castellan of Kraków since 1710. Starost of Lviv, Rohatyn, Lubaczów, Stryj and Piaseczno.
In 1697 he supported François Louis, Prince of Conti as candidate for king of Poland but accepted the election of August II. As commander of the Sandomierz Confederation, he thwarted the attempt to unite forces of Stanisław Leszczyński with them of Charles XII of Sweden. Later, in opposition to King August II.
Like his father he participated in the Vienna expedition of 1683. He led the left wing of Polish forces at the Battle of Vienna.