Cognomen Smsm (سمسم 
, Smsm , صمصم 
) , worldwide, is a common last name. The cognomen Smsm is characteristic of Egypt, where it is quite a common surname, Sudan, and Kuwait, where it is quite a rare surname. In absolute terms, this name is the most popular in Egypt, Sudan, and Saudi Arabia. Likewise, Smsm is the forename as well as the last name.