Blato, derived from Proto-Slavic *bolto 'mud; swamp, marsh', may refer to the following places:
Bosnia and Herzegovina Hutovo Blato Mostarsko Blato Blato (župa), a former region of the medieval Bosnian state, covering the territory of present-day Mostarsko Blato
Bulgaria Blato, Bulgaria, a village near Nevestino, Kyustendil Province Blato River, a river in western Bulgaria, a left tributary of the Iskar
Croatia Blato, Korčula, a municipality on the island Korčula Blato, Mljet, a village on the island Mljet Blato, Zagreb, a neighborhood in Novi Zagreb Blato na Cetini, a place in the Split-Dalmatia County Veliko Blato (Croatia), a wetland on the island of Pag
Czech Republic Blato, a village and part of Mikulovice (Pardubice District) in the Pardubice Region Blato, a village and part of Nová Bystřice in the South Bohemian Region
Serbia Blato (Pirot) Blato (Sjenica) Veliko Blato (Serbia), a lake near the Danube north of Belgrade
Slovenia Blato, Slovenske Konjice, a settlement in northeastern Slovenia Blato, Trebnje, a settlement in southeastern Slovenia Gorenje Blato, a settlement in central Slovenia Spodnje Blato, a settlement in central Slovenia