In Greek mythology, Stheno (; Ancient Greek: Σθενώ, romanized: Sthenṓ, lit. 'forceful') and Euryale ( yuu-RY-ə-lee; Ancient Greek: Εὐρυάλη, romanized: Euryálē, lit. 'far-roaming') were two of the three sister Gorgons, the third being Medusa, who were able to turn anyone who looked at them to stone. When Perseus beheaded Medusa, the two Gorgons pursued him but were unable to catch him.