Vovcha (Ukrainian: Вовча, Russian: Волчья) is an 88 km (55 mi) long left tributary of the Donets in the Belgorod Oblast of Russia and Kharkiv Oblast in Ukraine.

Its source is in Belgorod Oblast, near the Russian-Ukrainian border, near the village of Volchya Alexandrovka.

[2] It flows in a predominantly westerly direction.

The confluence with the Donets is near the city of Vovchansk.