Last name Bileya (Bileya 
) , worldwide, is a rare surname. The family name Bileya is characteristic of the Democratic Republic of the Congo, where it is a rare surname, Nigeria, where it is a very rare surname, and Canada, where it is an extremely rare surname. In absolute terms, the name is most common in the Democratic Republic of the Congo, Nigeria, and the United States. Much less frequently, Bileya is the forename as well as the last name.