Ortasu () is a village in the Uludere District of à Âñrnak Province in Turkey. The village is populated by Kurds of the Goyan and Sindî Kurdish tribes and had a population of 1,237 in 2023.
The hamlets of Alancñk and Tarlabaà Âñ are attached to Ortasu.
Population history from 2007 to 2023: