The Effia Kwesimintsim Municipal is one of the 260 Metropolitan, Municipal and District Assemblies (MMDAs) in Ghana and forms part of the14 MMDAs in the Western Region.

The Effia Kwesimintsim Municipal Assembly is carved out of the Takoradi Metropolitan Assembly as one of the 38 newly created and upgraded District Assemblies in 2018.

Created with Legislative Instrument (L.I) 2349 the Effia Kwesimintsim Municipal Assembly has its capital as  Kwesimintsim.

It was inaugurated on March 15, 2018 alongside other 37 newly created districts.