Zadnja Vas was attested in historical sources as Oberdorf in 1436. The later Slovene name of the settlement was changed from Sveta Lucija to Zadnja vas in 1955. The name was changed on the basis of the 1948 Law on Names of Settlements and Designations of Squares, Streets, and Buildings as part of efforts by Slovenia's postwar communist government to remove religious elements from toponyms. Both the medieval German nameOberdorf and the 1955 name are based on analogy with the name of nearby Srednja Vas.