The 2018 Portsmouth City Council election took place on Thursday 3 May 2018 to elect members of Portsmouth City Council.

Portsmouth City Council is the local authority of the city of Portsmouth, Hampshire, England. It is a unitary authority, having the powers of a non-metropolitan county and district council combined. It provides a full range of local government services, including Council Tax billing, libraries, social services, town planning, waste collection, and disposal, and it is a local education authority.