Siege of Kulaca Hisar

Siege of Kulacahisar
Part of the Byzantine–Ottoman wars
Date1285
Location
Kulaca, İnegöl, Turkey
Result Kayi victory
Territorial
changes
  • The Kayi Tribe captures Kulucahisar Castle from the Byzantines
  • Foundation of the Ottoman Beylik
Belligerents
Kayı Byzantine Empire
Commanders and leaders
Osman Gazi
Turgut Alp
Konur Alp
Akçakoca
Abdurrahman Gazi
Agios Nikolaos
Strength
300 gazis 1,000

The Siege of Kulaca Hisar (Ottoman Turkish: فتحِ قلجه حصار, lit.'Feth-i Kulaca Hisâr') was a battle fought between the Byzantines and the Turks under the command of Osman Gazi in 1285 for control of Fort Kulaca.