Diyanet (a Turkish word for office or authority for Islamic religious affairs) may refer to: The Directorate of Religious Affairs in Turkey (Turkish: Diyanet İşleri Başkanlığı, normally referred to simply as the Diyanet) is an official permanent state
- Presidency of Religious Affairs (Diyanet İşleri Başkanlığı)
- Turkish-Islamic Union for Religious Affairs (Diyanet İşleri Türk İslam Birliği) - a German branch of the Presidency of Religious Affairs