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 | United Kingdom, Algeria, Australia, United States, Myanmar |
| Dir | Turkey, Indonesia, Algeria, Myanmar, Netherlands |
| دير | Iran, Sudan, Algeria, Syria, Iraq |
| Dwyer | United Kingdom, Australia, Ireland, United States, Netherlands |