Cognomen Keyifli (Keyifli 
) , worldwide, is a very rare surname. The family name Keyifli is characteristic of Turkey, where it is a very rare surname, and the United States, where it is an extremely rare surname.
Sefa, Mehmet, Dilara, Hatice, Hülya, Valide, Zeynep, Meltem, Mustafa, Muhammet, Muharrem, Mücahit, Sadettin, Seyfettin, Cengizhan, Alperen, Fahrettin, Ömer, Yunus, Arda, Gani, Murat, Saide, Sevda, Ayşe, Zehra, Ahmet, Gamze, Nehir, Hamza, Hasan, Fatih, Ozlem, Cemal, and Hasan Nurcan