Aleksander Benedykt Stanisław Sobieski (Polish pronunciation: [alɛˈksandɛr bɛˈnɛdɨkt staˈɲiswaf sɔˈbjɛskʲi]; 9 September 1677[1] – 16 November 1714) was a Polish prince, nobleman, diplomat, writer, scholar and the son of John III Sobieski, King of Poland, and his wife, Marie Casimire Louise de la Grange d'Arquien.

Following his father's death in 1696, Sobieski was presented to the nobility in 1697 as a candidate for election to the Polish throne, as John III had conflicted with his eldest son Jakub.

[2] On January 19, 1698, together with his brother, Konstanty Władysław Sobieski, he organized a ball in Warsaw, in the honor of the newly crowned king Augustus II the Strong.

In summer of 1702, Charles de Caradas, the Marquis du Heron, a member of the Sejm (parliament) in Poland, suggested that Alexander should be seated on the throne of Hungary.

Later that year the prince remained in Oława and he didn't accompany his brothers in an expedition to Saxony, however he did travel to Wrocław where he had an affair with the former mistress of Augustus II, Anna Aloysia Esterle.