The Lang ministry (1925–1927) or First Lang ministry was the 42nd ministry of the New South Wales Government, and was led by the 23rd Premier, the Honourable Jack Lang, MLA. This ministry was the first of three occasions where Lang was Premier. Lang was first elected to the New South Wales Legislative Assembly in 1913 and served continuously until 1946. In 1923 Lang was elected NSW Parliamentary Leader of the Labor Party by Labor caucus, and became Opposition Leader. At the 1925 state election, Lang led Labor to victory, defeating the Nationalist Party led by Sir George Fuller.