All around the world, 克书 (Keshu 
, 克书 ) is a common epicene given name. The forename 克书 is characteristic of India, where it is a rare unisex name, Oman, where it is a rare male name, and Kuwait. Measured by absolute frequency, it most frequently occurs in India, China, and Saudi Arabia. Much less frequently, 克书 is the last name as well as the forename.