Cistothorus is a genus of birds in the Troglodytidae family. It contains the following species: \n* Apolinar's wren, Cistothorus apolinari \n* Mérida wren, Cistothorus meridae \n* Marsh wren or long-billed marsh wren, Cistothorus palustris \n* Sedge wren, short-billed marsh wren or grass wren, Cistothorus platensis