Last name Хаил (Hail 
, Khail 
, Xail 
) , across the world, is a common cognomen. The surname Хаил is habitual in Saudi Arabia, where it is quite a common surname, Qatar, where it is quite a rare surname, and Morocco. Measured by absolute frequency, it is commonest in Pakistan, Saudi Arabia, and the United States. Very seldom, Хаил is the forename as well as the last name.