Last name بیلی (Billy 
, Bailey , بیلی) , in all the world, is a widespread family name. The cognomen بیلی is habitual in Jamaica, where it is a common surname, Saint Vincent and the Grenadines, and Guernsey (explore the name in all countries). Not in comparison with a country's population, it is commonest in the United States, the United Kingdom, and Australia. Likewise, بیلی is the forename as well as the last name.