Cognomen Адан (Adan 
, Adão 
, Adán 
) , in all the world, is a widespread surname. The cognomen Адан is habitual in Somalia, where it is a common surname, Mexico, where it is quite a common surname, and Djibouti (explore the name in all countries). Measured by absolute frequency, this name is the most popular in Mexico, Somalia, and Kenya. Also, Адан is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Adan | Somalia, Kenya, Philippines, Mexico, United States |
| Adão | Spain, Angola, Mexico, United States, Brazil |
| Adán | Mexico, Honduras, United States, Argentina, Peru |
| Адан | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |