Countess Józefina Amalia Mniszech (1752–1798) was a Polish noblewoman, State Lady, Dame of the Order of Saint Catherine, amateur painter, and art collector.

Her later lovers include the colonel of the Targowicki Regiment, Dzierżański, who is assumed to be the father of her youngest daughter, Idalia, and the Commander of the Court Police in Tulchyn, Tadeusz Mossakowski.

1791, Stanisław Potocki expressed his desire to legally marry Countess Sophia Witt, but Józefina Amalia, who was backed by the Empress, refused to grant him a divorce.

[6] On 23 May 1792, Potocki entered into an arrangement with his wife, where he transferred his estates and the custody of their children to her, in return she pledged to pay him 50 thousand gallons per year.

Józefina Amalia left the management of her property to the discretion of the stewards and continued to live in Saint Petersburg, participating is society and refusing to send her husband a single penny.