The Kayı tribe is a historical Turkic group that played a significant role in the formation of the Ottoman Empire. They are believed to have originated from the Oghuz Turks and were known for their nomadic lifestyle, skilled horsemanship, and warrior culture. The tribe is often associated with the legendary figure Ertuğrul Bey, who is considered a key ancestor of the Ottoman sultans. The Kayı tribe settled in the region of Anatolia during the 13th century, where they established their influence. Their legacy continues to be celebrated in modern Turkish culture, particularly through popular media, such as the television series Diriliş: Ertuğrul, which dramatizes their history and contributions.