The Guwahati High Court was established on 1 March 1948 after the Government of India Act 1935 was passed. It was originally known as the High Court of Assam and Nagaland but renamed as Guwahati High Court in 1971 by the North East Areas Act, 1971. It has the largest jurisdiction in terms of states, with its area covering the states of Assam, Arunachal Pradesh, Nagaland, and Mizoram.