Cognomen สมาด (Standard 
, สมาด 
) , throughout the world, is quite a rare surname. The cognomen สมาด is habitual in Panama, where it is quite a rare surname, the United States, where it is a rare surname, and Belgium. In absolute terms, this name is the most popular in the United States, Nigeria, and Indonesia. Also, สมาด is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Standard | Bangladesh, Spain, United States, Kenya, Taiwan |
| สมาด | Thailand |