Cognomen Koçoglu (Koçoglu 
) , in all the world, is a very rare family name. The cognomen Koçoglu is characteristic of Western Asia, particularly Turkey, where it is a very rare surname.
Ali, Candan, Cemile, Bayram, Nurten, Hatice, Yilmaz, Zeynep, Aydın, Mustafa, Ramazan, Yıldız, Muhammet, Muhittin, Abdullah, Nurettin, Emir Mert, Selçuk, Sultan, Saffet, Mehmet, Isa, Aziz, Erol, Zeki, Merve, Murat, Sedat, Burcu, Kadir, Kenan, Tekin, Halil, Hakan, Fatih, Yusuf, Yunus, Ömer, Hüseyin, and Süleyman