Ernst Bloch (, July 8, 1885 – August 4, 1977) was a German Marxist philosopher.
Bloch was influenced by Georg Wilhelm Friedrich Hegel and Karl Marx, as well as by apocalyptic and religious thinkers such as Thomas Müntzer, Paracelsus, and Jacob Boehme. He established friendships with Georg Lukács, Bertolt Brecht, Kurt Weill, Walter Benjamin, and Theodor W. Adorno. Bloch's work focuses on the concept that in a humanistic world where oppression and exploitation have been eliminated there will always be a truly revolutionary force. Bloch has been called the greatest of modern utopian thinkers.