Surname Хосаи (Hosai 
, Хосаи) , throughout the world, is a rare cognomen. The surname Хосаи is characteristic of Japan, where it is a rare surname, Saudi Arabia, where it is a very rare surname, and Israel. Measured by absolute frequency, it is commonest in Japan, India, and Saudi Arabia. Also, Хосаи is the forename as well as the last name.