Etymological, Lexical and Historical Analysis of the Toponyms ‘Fergana’ and ‘Dawan’

In this article the origins of the toponyms ‘Fargona’ and ‘Dawan (Day-yuan)’ have been discussed. The meanings and origins of the toponyms ‘Fargona’ and ‘Dawan (Day-yuan)’ have been analyzed with the research of geographical situation of the Fergana Valley, etymology of the toponym ‘Fargona’, lexical-semantic analysis and historical origin of the toponym after learning some works of Uzbek, Russian and Tajik researchers and we attempted to clarify the meaning of Fargona, Dawan (Day-yuan). In the article other names of the valley like Fakhanna and Poluona are also mentioned. In the conclusion of the article the meaning of the place names ‘Fargona’ and ‘Dawan (Day-yuan)’ has been given.