Cognomen Kociu (Kociu 
) , in the world, is a rare surname. The cognomen Kociu is characteristic of Southern Europe, particularly Albania, where it is quite a common surname, Greece, where it is quite a rare surname, and Italy, where it is a very rare surname.
Ali, Ergi, Hodo, Flor, Indi, Ilia, Ilir, Igli, Olsi, Olta, Marvi, Mikel, Shero, Siasi, Sokol, Alina, Alban, Altin, Aljon, Anila, Artur, Artan, Niku, Ardit, Jona, Luan, Ana, Ari, Leo, Isa, Mira, Stiv, Alba, Albi, Aldo, Alti, Anna, Anis, Arti, Asim, Besi, Beki, Bufe, Kevi, Kico, Geri, Limi, Jani, and Arben