Isluga River is a river in Chile and Bolivia, and is also known as Sitani or Arabilla. It starts at the confluence of the rivers Chaguane and Huinchuta and flows for before reaching the Laguna Mucalliri of the Salar de Coipasa. It receives water from the volcanoes Isluga, Cabaray and Quimsachata as well as the Sierra Uscana.