Polyxena

thumb|300px|The sacrifice of Polyxena by the triumphant Greeks (Black-figure pottery|Attic black-figure Tyrrhenian amphora, ca. 570–550 BC)

In Greek mythology, Polyxena (; ) was the youngest daughter of King Priam of Troy and his queen, Hecuba. She does not appear in Homer, but in several other classical authors, though the details of her story vary considerably. After the fall of Troy, she dies when sacrificed by the Greeks on the tomb of Achilles, to whom she had been betrothed and in whose death she was complicit in many versions.