The Ministry of National Defence is a office of government in Poland headed by the Minister of National Defence. It is responsible for the organisation and management of the Polish Armed Forces. During the Second Polish Republic and World War II it was called the Ministry of Military Affairs. Ministry budget for 2022 was 140 billion PLN.

The Armed Forces of the Republic of Poland, Also called the Polish Armed Forces And popularly called Wojsko Polskie in Poland are the national armed forces of the Republic of Poland. The name has been used since the early 19th century, but can also be applied to earlier periods. The Polish Legions and the Blue Army, composed of Polish volunteers from America and those who switched sides from the Central Powers, were formed during World War I. In the war's aftermath, the Polish Army was reformed from the remnants of the partitioning powers' forces and expanded significantly during the Polish–Soviet War of 1920.