Cognomen 国司 (Kunishi 
, 国司 
) , around the world, is a rare family name. The family name 国司 is characteristic of Singapore, where it is a rare surname, Japan, where it is a very rare surname, and the United States, where it is an extremely rare surname. Not in comparison with a country's population, the name is most common in Japan, the United States, and China. Predominantly, 国司 is the forename as well as the last name.