The first Robertson ministry was the sixth ministry of the Colony of New South Wales, and was led by the Honourable John Robertson. It was the first of five occasions that Robertson was Premier. Robertson was elected in the first free elections for the New South Wales Legislative Assembly held in March 1856. The title of Premier was widely used to refer to the Leader of Government, but not enshrined in formal use until 1920. This ministry covers the period from 9 March 1860 until 9 January 1861, when Robertson resigned his commission.