In South Africa, a metropolitan municipality or Category A municipality is a municipality which executes all the functions of local government for a city or conurbation. This is by contrast to areas which are primarily rural, where the local government is divided into district municipalities and local municipalities.
The Constitution, section 155.1.a, defines "Category A" municipalities. In the Municipal Structures Act it is laid out that this type of local government is to be used for conurbations, "centre[s] of economic activity", areas "for which integrated development planning is desirable", and areas with "strong interdependent social and economic linkages".