Surname สุทธิรักษ์ (สุทธิรักษ์ 
, Suttirak 
, Sutthirak , and others...) , all over the world, is quite a rare cognomen. The surname สุทธิรักษ์ is characteristic of Thailand, where it is quite a rare surname, and Norway, where it is a very rare surname. Also, สุทธิรักษ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sutthiruk, สุทธิรักษ์, Sutthirak | Thailand |
| Suttirak | United States, Norway, Thailand |
| Suthirak, Suttiruk | United States, Thailand |
Soodthirak, Soottiruk, Sudhirak, Sudteerak, Sudthirag, Sudthirak, Sudtirak, Sutcharuk, Sutdhiraksa, Suteerak, Suthanyarak, Suthiprak, Suthiraksa, Suthirug, Suthiruk, Suthiruksa, Suthirux, Suththiruk, Sutirak, Sutiruck, Sutiruk, Sutitrak, Suttanarak, Sutteerak, Sutthairak, Suttheerak, Suttherak, Sutthiragsa, Sutthiraks, Sutthiruck, Sutthirug, Sutthiruksa, Sutthiyrak, Sutthrak, Sutthurak, Suttirag, Suttiraksa, Suttiruck, Suttirug, Suttrak, Suttrirak, Suttthirak, and Sutunrak