Last name Куси (Kushi 
, Cusi 
, 久慈 
, and others...) , throughout the world, is a common cognomen. The family name Куси is characteristic of Peru, where it is quite a common surname, Bolivia, and Albania. Measured by absolute frequency, this name is the most popular in Peru, Philippines, and Bolivia. Also, Куси is the forename as well as the last name.