Kösedağ

Kösedağ or Kosedag may refer to:


 * Mount Kösedağ (Ağrı), a mountain in the province of Ağrı, Turkey
 * Mount Kösedağ (Sivas), a mountain in the province of Sivas
 * Battle of Köse Dağ, a war between the Anatolian Seljuk State and the Mongolian empire