Euthenae or Euthenai (Ancient Greek: Εὐθηναί) was a coastal town of ancient Caria, on the Ceramicus Sinus.

Its site is located near Altınsivrisi, Asiatic Turkey.

 This article incorporates text from a publication now in the public domain: Smith, William, ed. (1854–1857). "Euthenae". Dictionary of Greek and Roman Geography. London: John Murray.

36°55′55″N 28°15′18″E / 36.932°N 28.255°E / 36.932; 28.255