The Deputy Chief Minister of the Australian Capital Territory is the second-most senior officer in the Government of the Australian Capital Territory. The Deputy Chief Ministership has been a ministerial portfolio since its establishment in 1989. Unlike in other states and territories, the Deputy Chief Minister of the ACT is not nominally appointed by an Administrator or Vice-Regal, but by the Chief Minister.

The current Deputy Chief Minister is the Labor Party's Yvette Berry[1] who took over from former Labor Deputy leader Simon Corbell on 31 October 2016, following Corbell's retirement[2] at the 2016 Australian Capital Territory general election.