Irretrievable (German: Unwiederbringlich, 1892, also known as Beyond Recall and No Way Back ) is one of realist Theodor Fontane's mature German novels. As with some other of Fontane's novels (including Effi Briest), its heroine is believed to be based roughly on a real person whose demise Fontane heard about, and it deals delicately with topics that, at the time it was written, were close to being taboo, including adultery and suicide.

The novel has been translated into English twice. The first translation, by Douglas Parmée, was published in 1963 as Beyond Recall and republished in 2011 by New York Review of Books as Irretrievable. In 2010 a new English translation, No Way Back, was published by Angel Classics (London).

There is a German TV movie based on the novel, directed by Falk Harnack and first broadcast in 1968.