The Mokri Yaly (Ukrainian: Мокрі Яли; Russian: Мокрые Ялы) is a river in western Donetsk Oblast, Ukraine.

From its headwaters in Volnovakha, it flows roughly west and northwest to its confluence with the Vovcha river, which forms part of the Dnipropetrovsk Oblast boundary.

The name of the river roughly translates to 'wet shores', combining Ukrainian mokri 'wet' (plural) and Urum yaly 'shore'.

Beginning near Volnovakha in Donetsk Oblast, it flows northwards, through the town of Velyka Novosilka, where the Shaitanka and Kashlahach [uk] rivers join it, while smaller rivers like the Sukhа Yalа (or Balka Sukhi Yaly) and Kobylna join it elsewhere.

The river served as an important defensive line for German forces during World War II, where fortifications along the river formed part of the wider Mius-Front in which the Germans conducted a fighting withdrawal from the Soviet Union after the failure of Operation Barbarossa.