The Barranco Surname Project seeks to find common heritages through DNA testing and the sharing of family history and genealogical information. Variant surname spellings are welcome. The origins of the Barranco name identified to date are Spain, Italy and, possibly, Portugal. The Barranco name is found today in Spain, Portugal, Italy, Cuba, Dominican Republic, Mexico, The Philippines, Germany, USA, Great Britain, France and countries in Central America, South America and parts of Africa.