Surname เข้มแข็ง (Strong 
, Storn 
, Khemkhaeng 
) , around the world, is a common family name. The family name เข้มแข็ง is characteristic of Aland Islands, where it is quite a common surname, Isle of Man, and the United States (explore the name in all countries). Measured by absolute frequency, it most frequently occurs in the United States, the United Kingdom, and Canada. Very seldom, เข้มแข็ง is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Strong | United Kingdom, United States, Australia, Indonesia, Canada |
| Storn | United Kingdom, Democratic Republic of the Congo, United States, Australia, Indonesia |
| Khemkhaeng | United States, Thailand |
Soodtrong, and Trongthrong