Ursus and the Tartar Princess (, , also known as Tartar Invasion) is a 1961 Italian-French peplum film written and directed by Remigio Del Grosso and starring Yoko Tani and Ettore Manni.
The young Polish prince Stephen goes on a mission together with the mighty Ursus, but they are captured by the Tartars.
During the days of his captivity Stefano falls in love with Ilia, a Tatar girl daughter of the chief. But the girl is already promised to the son of the Great Khan, so a duel arises between the two rivals.
The Tartar is mortally wounded, so Ursus, Stefano and Ilia take the opportunity to flee to the Polish camp where a battle soon breaks out, in which Stephen's people win.