No. 304 (Land of Silesia) Polish Bomber Squadron (Polish: 304 Dywizjon Bombowy "Ziemi Śląskiej im. Ks. Józefa Poniatowskiego") was a Polish World War II bomber unit. It fought alongside the Royal Air Force under their operational Command and operated from airfields in the United Kingdom, serving from April 1941 as a bomber unit in RAF Bomber Command, from May 1942 as an anti-submarine unit in RAF Coastal Command and from June 1945 as a transport unit in RAF Transport Command.