Family name داير (Dyer 
, Dayer 
, داير 
) , all over the world, is a common cognomen. The family name داير is characteristic of Latin America and the Caribbean, particularly Antigua and Barbuda, where it is quite a common surname, Jamaica, and Dominica (explore the name in all countries). In absolute terms, it is commonest in the United States, the United Kingdom, and Australia. Much less frequently, داير is the forename as well as the last name.