Diyadin ( Armenian: Տատէոն ( Latin transliteration: Tatēon); ) is a district of Ağrı Province of Turkey, at the foot of Mount Tendürek, a high peak in the Aladağlar range that stands between Ağrı and the north shore of Lake Van. The mayor is Hazal Aras ( BDP).
Diyadin is a district of Ağrı Province of Turkey, Diyadin may also refer to:
- Diyadin, Azerbaijan, village in Azerbaijan
- Metin Diyadin, Turkish football manager