Vlaka () is a village in the municipality of Ravno, Herzegovina-Neretva Canton, Federation of Bosnia and Herzegovina, Bosnia and Herzegovina.Official results from the book: Ethnic composition of Bosnia-Herzegovina population, by municipalities and settlements, 1991. census, Zavod za statistiku Bosne i Hercegovine - Bilten no.234, Sarajevo 1991. Prior to the Bosnian war village belonged to the municipality Trebinje, which is now in the Republika Srpska.
History Until the signing of the Dayton Peace Agreement, the village was part of the then municipality of Trebinje, which became part of the Republika Srpska.
Demographics According to the 2013 census, its population was 9, all Serbs.
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