Anna Aloysia Maximiliane Louise von Lamberg (? - died 28 June 1738) was an Austrian countess who was successively the mistress of Augustus II the Strong, King of Poland, and Aleksander Benedykt Sobieski. She is known to history as Countess Esterle. Later, in Wrocław, she became the mistress of Aleksander Benedykt Sobieski, who had been Augustus's rival in the 1697 election for the Polish throne. She died on 28 June 1738 in Wrocław. Her husband, Graf von Oppersdorff (Oppersdorf), died on 29 December 1744 in Kostelec nad Orlicí.