Cognomen سمارت (Smart 
, سمارت 
, Smartt 
) , all around the world, is a widespread last name. The last name سمارت is habitual in Saint Vincent and the Grenadines, where it is a common surname, Grenada, where it is quite a common surname, and Guernsey (explore the name in all countries). In absolute terms, this name is the most popular in the United States, Nigeria, and the United Kingdom. Also, سمارت is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Smart | Indonesia, United Kingdom, Australia, United States, Nigeria |
| سمارت | Saudi Arabia, Egypt, Iraq |
| Smartt | United Kingdom, Canada, Australia, South Africa, United States |