The Ister is a 2004 documentary film directed by David Barison and Daniel Ross.
The film is loosely based on the works of philosopher Martin Heidegger, in particular the 1942 lecture course he delivered, Hölderlins Hymne «Der Ister», concerning a poem, Der Ister, by the German poet Friedrich Hölderlin.
The film had its premiere at the International Film Festival Rotterdam in 2004.
The Ister features extensive interviews with the French philosophers Bernard Stiegler, Jean-Luc Nancy, and Philippe Lacoue-Labarthe, as well as with the German film director Hans-Jürgen Syberberg. Other interviews are conducted with a bridge engineer (Nemanja Calic), an amateur botanist (Tobias Maier), and a Romanian archaeologist (Alexandru Suceveanu).