Last name Cocer (Kusi 
, Cocer 
) , in all the world, is a common cognomen. The cognomen Cocer is characteristic of Ghana, where it is quite a common surname, Aland Islands, and Gabon, where it is quite a rare surname. Measured by absolute frequency, it most frequently occurs in Ghana, India, and Indonesia. Much less frequently, Cocer is the forename as well as the last name.