The Third Peacock Ministry was the 42nd ministry of the Government of Victoria.

It was led by the Premier of Victoria, Sir Alexander Peacock, and consisted of members of the Nationalist Party.

[1] The ministry was sworn in on 28 April 1924[2] following Peacock becoming leader of the Nationalist Party after the collapse of the Nationalist-Country Coalition government led by Harry Lawson.

The ministry dissolved following the Nationalist Party's loss at the 1924 state election and was succeeded by George Prendergast's Labor government.