Family name Бат (Bat 
, Bath 
, Bathe ) , throughout the world, is a common cognomen. The cognomen Бат is habitual in Mongolia, where it is a common surname, Israel, where it is quite a common surname, and Martinique. Not in comparison with a country's population, it is commonest in India, Israel, and the Democratic Republic of the Congo. Likewise, Бат is the forename as well as the last name.