Last name 卡乌 (Cau 
, 卡乌) , around the world, is a common cognomen. The cognomen 卡乌 is habitual in Italy, where it is quite a common surname, Mozambique, where it is quite a rare surname, and France. In absolute terms, this name is the most popular in Italy, France, and India. Much less frequently, 卡乌 is the forename as well as the last name.