Cognomen Хаов (Хаов 
, Haov, Xaov) , in all the world, is a very rare last name. The cognomen Хаов is habitual in Russia, where it is a very rare surname, Australia, and Kazakhstan. In absolute terms, it is the most numerous in Russia, the United States, and Australia. Much less frequently, Хаов is the forename as well as the last name.