Kostiantyn Hryhorovych Voblyi (Ukrainian: Костянтин Григорович Воблий; May 27, 1876, Tsarychanka (now Dnipropetrovsk region) – September 12, 1947, Kyiv) was a Ukrainian economic geographer, scientist economist, professor of the Kyiv University, academician of the Ukrainian Academy of Sciences (1919), Vice-president of the Ukrainian Academy of Sciences (1928-1930), director of the Institute of Economics (1943–1947). Honored Scientist of Ukraine (1944), awarded the Order of Lenin and the Order of the Red Banner of Labour.