The Jew of Linz is a 1998 book by Australian writer Kimberley Cornish, in which the author alleges that the Austrian philosopher Ludwig Wittgenstein had a profound effect on Adolf Hitler when they were both pupils at the Realschule (lower secondary school) in Linz, Austria, in the early 1900s. Cornish also alleges that Wittgenstein was involved in the Cambridge Five Soviet spy ring during the Second World War.