Directed by Zack Snyder and based on the graphic novel by Frank Miller, this is the definitive film that popularized the Spartan legend for modern audiences.
After the merger of Viacom18 and JioCinema, Warner Bros. content often lands here. Recently, JioCinema has been aggressive in adding regional dubs. Check their library; you might find both 300 and Rise of an Empire with Tamil audio for free (with ads). 300 spartans tamil dubbed movies