Walter Kämpf (12 September 1920 – 2 November 1943) was an Austrian anti-Nazi activist. He became a resistance member when he was still at school in Vienna. Following his conscription in 1939 he was also a soldier. He was subsequently suspected of "spying" and convicted by a military court. His death sentence was carried out using the guillotine that had been installed at the Vienna Regional Court complex, soon after the incorporation of Austria into an expanding German state.