Walter Simons (24 September 1861 in Elberfeld - 14 July 1937 in Nowawes) was a German politician. He was president of the German Supreme Court from 1922-1929. After the death of Friedrich Ebert in February 1925 he was the second acting president of the Weimar Republic from 12 March 1925 until 12 May 1925 (the first acting president was Hans Luther) when the next president, Paul von Hindenburg, was elected and assumed office.