The Government of the Australian Capital Territory, also referred to as the Australian Capital Territory Government or ACT Government, is the executive branch of the Australian Capital Territory, one of the territories of Australia. The leader of the party or coalition with the confidence of the Australian Capital Territory Legislative Assembly forms government. Unlike the Australian States and the Northern Territory, the Australian Capital Territory Legislative Assembly directly elects one of their number to be the Chief Minister of the Australian Capital Territory as the head of the Government, rather than being appointed by a Governor or Administrator.

The Australian Capital Territory (ACT), known as the Federal Capital Territory (FCT) until 1938, is a federal territory of Australia. Canberra, the capital city of Australia, is situated within the territory. It is located in southeastern Australian mainland as an enclave completely within the state of New South Wales. Founded after Federation as the seat of government for the new nation, the territory hosts the headquarters of all important institutions of the Australian Government.