Founder: Orhan (Kuruluş: Orhan) (translated)

Kuruluş: Orhan is a Turkish historical drama television series produced by Bozdağ Film, directed by Bülent İşbilen and written by Mehmet Bozdağ. Blending history, action, drama and adventure, it premiered on ATV on 29 October 2025 as a direct sequel to Kuruluş: Osman, which aired on the same channel from 2019 to 2025, and as the third installment in the franchise that began with Diriliş: Ertuğrul.

The series dramatizes the life and reign of Orhan Gazi, the second Ottoman sultan, following his efforts to strengthen and expand the young beylik amid political rivalries, warfare and personal struggles, with key events such as the capture of Bursa and the expansion into Rumelia at its core. Mert Yazıcıoğlu stars as Orhan Bey, alongside cast members including Barış Falay, Burak Sergen, Şükrü Özyıldız and Onur Bay. The production concluded with its 26th episode, broadcast on 10 June 2026.