A municipal council is the legislative body of a municipality or local government area. Depending on the location and classification of the municipality it may be known as a city council, town council, town board, community council, rural council, village council, or board of aldermen.

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.