Cognomen ราย (Rai 
, ราย 
) , in all the world, is a prevalent surname. The family name ราย is habitual in Bhutan, where it is a prevalent surname, Nepal, and Qatar, where it is a widespread surname (explore the name in all countries). In absolute terms, it is the most numerous in India, Nepal, and Saudi Arabia. Much less frequently, ราย is the forename as well as the last name.