Cognomen الاحد (الاحد 
) , globally, is a rare surname. The family name الاحد is characteristic of Sudan, where it is a rare surname, Jordan, and Libya. Measured by absolute frequency, it is the most numerous in Sudan, Egypt, and Saudi Arabia. Much less frequently, الاحد is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| الاحد | Saudi Arabia, Yemen, Sudan, Egypt, Iraq |