Family name Külhan (Külhan 
) , in all the world, is a rare cognomen. The family name Külhan is habitual in Turkey, where it is a rare surname, and Germany, where it is an extremely rare surname. Very seldom, Külhan is the forename as well as the last name.
Ali, Bahar, Kenan, Recep, Derya, Leyla, Tarik, Eli F, Erdem, Ensar, Ekrem, Eyüp, Harun, Hasan, Hacer, Havva, Vedat, Fatma, Osman, Yahya, Yusuf, Özge, Cemal, Celal, Ahmet, Aysel, Efe, Musa, Sema, Seda, Arif, Dudu, Gül, Nebi, Nuri, Esra, Ömer, Emel, Ezgi, Hava, Veli, Merve, Selma, Semun, Seher, Sezer, Soner, Ayşe, Emre, and Meryem