Cognomen קוסטי (Kusti 
, קוסטי 
, Yuxo 
) , around the world, is quite a rare surname. The surname קוסטי is habitual in Sudan, where it is a rare surname, Israel, and Indonesia, where it is a very rare surname. In absolute terms, it is the most numerous in India, Indonesia, and Sudan. Also, קוסטי is the forename as well as the last name.