Nikolaus VI Graf Pálffy ab Erdöd (Hungarian: erdődi Miklós Pálffy) (1 March 1657 – Pozsony, 20 February 1732) was a Hungarian noble, Imperial Field marshal and Palatine of Hungary.
He was the eldest son of Count Miklós IV Pálffy de Erdőd (1619–1679) and Maria Eleonora von Harrach zu Rohrau (1634–1693). János Pálffy was his younger brother.
Like his father, he pursued a military career and joined the Habsburg Army. He participated in the Battle of Vienna and the following actions, until he became commander of the Esztergom Fortress in 1687.
In 1688, he participated in the campaign against the Turks under Maximilian II Emanuel, Elector of Bavaria and fought in the Siege of Belgrade (1688), Battle of Batočina, Battle of Niš (1689) and Battle of Slankamen.
As a reward, he became Schlosshauptmann von Pressburg (Captain of Pressburg Castle) in 1694, a Knight of the Order of the Golden Fleece in 1711, Palatine of Hungary in 1713 and Field Marshal General in 1718.
As Palatine of Hungary, he organized the supply of the Army defending Hungary against the Turks. It is also to his credit that the Hungarian and Croat nobility accepted the Pragmatic Sanction so quickly.
He married in October 1680 with Katharina Elisabeth von und zu Weichs (died 1724) and had :