The 2023 New South Wales state election was held on 25 March 2023 to elect the 58th Parliament of New South Wales, including all 93 seats in the Legislative Assembly and 21 of the 42 seats in the Legislative Council. The election was conducted by the New South Wales Electoral Commission (NSWEC).

The Parliament of New South Wales, formally the Legislature of New South Wales, is the bicameral legislative body of the Australian state of New South Wales (NSW). It consists of the monarch, the New South Wales Legislative Assembly and the New South Wales Legislative Council. Each house is directly elected by the people of New South Wales at elections held approximately every four years. The legislative authority of the parliament derives from section 5 of the Constitution Act 1902 (NSW). The power to make laws that apply to New South Wales is shared with the Federal Parliament. The houses of the New South Wales Parliament follow the Westminster parliamentary traditions of dress, Green–Red chamber colours and protocols. The houses of the legislature are located in Parliament House on Macquarie Street, Sydney.