Ister, The Ister, or Der Ister may refer to: *The Danube river, known as the Ister in Ancient Greek (Ἴστρος) and Thracian *The Dniester river, known as the Ister in Thracian *"Der Ister", a poem by Friedrich Hölderlin **'' Hölderlin's Hymn "The Ister"'', a lecture course delivered by Martin Heidegger in 1942 * ''Ister''-class frigate, a group of screw frigates ordered for the Royal Navy in the early 1860s * ''The Ister'' (film), a 2004 film directed by David Barison and Daniel Ross *'' Tajuria ister'', a butterfly of the family Lycaenidae

See also