Family name Дайер (Dyer 
, Dier , Dayer 
) , all over the world, is a common cognomen. The family name Дайер 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, the name is most common in the United States, the United Kingdom, and Australia. Very seldom, Дайер is the forename as well as the last name.