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All around the world, Radko (Radko , Радко , Радько ) is quite a rare boy's first name. The forename Radko is habitual in Eastern Europe, particularly Bulgaria, where it is quite a common masculine name, Slovakia, where it is quite a rare masculine name, and Czechia. Likewise, Radko is the last name as well as the forename.
Radko is also a name for the fictitious and mythical characters: Oslo (Radko Dragic) , the character in « Money Heist ».