Maximilien-Auguste Bleickard d'Helmstatt, Count of Helmstatt (28 August 1728 – 10 July 1802) was a German-born nobleman who served as a military officer in the army of the Kingdom of France.

[1][2] Helmstatt was born in Nancy, the son of Maximilien Bleickard and Eléonore Henriette de Poitiers.

At the gathering of the Estates General from May 1789, Helmstatt aligned himself emphatically with the Ancien Régime and Louis XVI.

[2] Under the terms of the Treaty of Lunéville in 1801, Helmstatt lost all of his French possessions without any territorial or financial compensation.

Having no heirs, in 1773 Helmstatt adopted François Louis d'Helmstatt (1752–1841), a distant cousin of the German line of Oberöwisheim-Hochhausen.