Last name دير (Der 
, Dir 
, دير 
) , in all the world, is a common family name. The last name دير is characteristic of Ireland, where it is quite a common surname, Jamaica, and Australia (explore the name in all countries). Not in comparison with a country's population, it is the most numerous in the United States, Algeria, and Australia. Much less frequently, دير is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Der | Myanmar, Australia, Algeria, United Kingdom, United States |
| Dir | Netherlands, Myanmar, Algeria, Indonesia, Turkey |
| دير | Iran, Sudan, Algeria, Iraq, Syria |
| Dwyer | Netherlands, Australia, United Kingdom, Ireland, United States |