Sir Paw Tun (c. 1883 – 28 February 1953), also known as U Paw Tun, Maung Paw Tun, Sa Paw Tun, and Joseph Porter, was a Burmese administrator, barrister and politician who served as prime minister of British Burma in 1942, following the dismissal and arrest of U Saw until the evacuation of the Burmese government to India. A moderate nationalist and leading figure in pre-war Burmese politics, he was eventually displaced by the Anti-Fascist People's Freedom League, led by Aung San.