The Primera División B (First Division B: in English), also known as Primera División B Metropolitana or simply Primera B Metropolitana in order to distinguish it from the Primera División B Nacional, is the metropolitan tournament of the Paraguayan Tercera División. Only teams from the Gran Asunción metropolitan area and Central Department take part in this third division league. Teams from all other parts of Paraguay that are not part of the Gran Asunción area play the Primera División B Nacional tournament in order to get promoted to the Paraguayan Division Intermedia.