Çankırı and its surroundings were captured by the Danishmends after the victory of Malazgirt in 1071. The Crusader Army under Raymond de Toulouse, who left Istanbul in 1101 to rescue the ruler of Antioch, Bohemond imprisoned in Malatya and confined to the Niksar fortress, headed to Çankırı after taking Ankara, but they failed to take the castle. The Crusader Army, which faced the Seljuk army near Amasya, was defeated. In 1134, the Byzantine Emperor Ioannes Komnenos was able to capture the castle after fierce battles, but after his leave, the Danishmends retook the city. Then the Seljuks dominated the region. I. During the period of Murad I, Çankırı and its surroundings joined the Ottoman lands. Although Timur gave Çankırı to its former owners in 1402, Mehmet I took it back in 1439. Çankırı, which was under the banner of a general in terms of governance during the Ottoman period, was the center of province under Kastamonu before the proclamation of the Republic. During the War of Independence, Çankırı played an important intermediary center role in the transport of materials and people from Istanbul to Ankara via Inebolu. It was turned into a provincial center during the Republican period.