Family name Bilgihan (Bilgihan 
) , across the world, is a very rare surname. The family name Bilgihan is characteristic of Turkey, where it is a very rare surname, Germany, where it is an extremely rare surname, and the United States. Not in comparison with a country's population, it most frequently occurs in Turkey, the United States, and China. Likewise, Bilgihan is the forename as well as the last name.