Mount Cilo (Turkish: Cilo Dağı; Kurdish: Çiyayê Cîlo; Armenian: Ջողա լեռ) is the second highest mountain in Turkey after Greater Mount Ararat (Büyük Ağrı Dağı; 5,137 m (16,854 ft)). It is 4,135 m (13,566 ft) high on its highest summit Reşko, also known as Gelyaşin or Uludoruk, and lies in the Hakkâri Dağları/Mountains, located in the East Taurus (Tr.: "Doğu Toroslar"), in the district of Yüksekova of the Hakkâri Province in southeasternmost part of Turkey in East Anatolia region.

The craggy massif Mount Cilo is 30 km (19 miles) long and builds the western part of the Hakkari Cilo-Sat Mountains National Park which was established in 2020. The mountains are characterized by an extremely rugged topography with high, pointed summits, sharp and jagged ridges, very steep or even occasionally vertical rock (primarily limestone) cliffs/walls and deep gorges and a few glaciers which are losing their volume and retreating since last decades due to global warming! The massif's second (and Turkey's third at all) highest peak Suppa Durek, a.k.a. Erinç Tepe (4,116 m (13,504 ft)), is located in the immediate vicinity (4 km (2.5 miles) to its west). In 1984, the area was closed to civilians because of the presence and activity of the separatist terror organization PKK. It was not until 2002 that a team of mountaineers was authorized to climb again the Cilo mountains.

• Ark of Nuh or Noah
• List of mountains in Turkey
  • Mount Judi

• Sketch of the range