Franciszek Dionizy Kniaznin (4 October 1750, Vitebsk – 25 August 1807, Konskowola) is considered to be one of the most distinguished Polish poets of the Polish sentimentalism in the Enlightenment period.
He was a member of the Jesuit order since 1764, and after its suppression—a secretary of prince Adam Kazimierz Czartoryski and teacher of his children.