Bilyi Kolodiaz (; ) is a rural settlement in Chuhuiv Raion, Kharkiv Oblast, Ukraine. It is located at the northeast of the oblast, in the drainage basin of the Donets. Bilyi Kolodiaz belongs to Vovchansk urban hromada, one of the hromadas of Ukraine. Population:
Until 18 July 2020, Bilyi Kolodiaz belonged to Vovchansk Raion. The raion was abolished in July 2020 as part of the administrative reform of Ukraine, which reduced the number of raions of Kharkiv Oblast to seven. The area of Vovchansk Raion was merged into Chuhuiv Raion.
Until 26 January 2024, Bilyi Kolodiaz was designated urban-type settlement. On this day, a new law entered into force which abolished this status, and Bilyi Kolodiaz became a rural settlement.
The settlement has historically been a centre of sugar beet industry.
Bilyi Kolodiaz railway station in on the railway connecting Vovchansk and Kupiansk. There is infrequent passenger traffic.
The settlement has road connections with Vovchansk and with Prykolotne.