Adam Mikołaj Sieniawski (1666–1726) was a Polish nobleman, aristocrat and military leader.

He married Elżbieta Lubomirska, daughter of Court and Grand Marshal Prince Stanisław Herakliusz Lubomirski, in 1687.

In 1697 he supported François Louis, Prince of Conti as candidate for king of Poland but accepted the election of Augustus II.

As commander of the Sandomierz Confederation, he thwarted the attempt to unite forces of Stanisław Leszczyński with them of Charles XII of Sweden.

You can help Wikipedia by expanding it.This biographical article related to the military of Poland is a stub.