Krasno-Oskol Reservoir (українська. Червоноскільське водосховище; русский. Краснооскольское водохранилище, sometimes translated as Chervonooskil -, Krasnooskol'skoye -) is an artificial lake on Oskol River in Kharkiv Oblast, Ukraine.
The reservoir was opened in year 1958. Its area is 130 km², maximal length 125 km, maximal width 4 km, average depth is 4 m and about the volume 474 km³.
