The 1877 New South Wales colonial election was held between 24 October and 12 November 1877. This election was for all of the 73 seats in the New South Wales Legislative Assembly and it was conducted in 53 single-member constituencies, six 2-member constituencies and two 4-member constituencies, all with a first past the post system. Suffrage was limited to adult male British subjects, resident in New South Wales. The previous parliament of New South Wales was dissolved on 12 October 1877 by the Governor, Sir Hercules Robinson, on the advice of the Premier, Sir John Robertson.