Kreis Fellin (Viljandi kreis, Феллинский уезд) was one of the nine subdivisions of the Governorate of Livonia of the Russian Empire. It was situated in the northern part of the governorate (in present-day southern Estonia). Its capital was Viljandi (Fellin). The territory of Kreis Fellin corresponds to the most part of the present-day Viljandi County and parts of Järva, Jõgeva and Valga counties.[1]