The 1877 New South Wales colonial election was for 73 members representing 61 electoral districts. The election was conducted on the basis of a simple majority or first-past-the-post voting system. In this election there were 8 multi-member districts returning 20 members and 53 single member districts. In the multi-member districts each elector could vote for as many candidates as there were vacancies. 17 districts were uncontested. There was no recognisable party structure at this election.