The High Sheriff of Belfast is a title and position which was created in 1900 under the Local Government (Ireland) Act 1898, with Sir James Henderson the first holder. Like other high sheriff positions, it is largely a ceremonial post today. The current high sheriff is Councillor Sammy Douglas, who took office in 2024.

Belfast City Council is the local authority with responsibility for part of Belfast, the largest city of Northern Ireland. The council serves an estimated population of 348,005 (mid-2022 est.), the largest of any district council in Northern Ireland, while being the smallest by area. Belfast City Council is the primary council of the Belfast Metropolitan Area, a grouping of six former district councils with commuter towns and overspill from Belfast, containing a total population of 579,276.