Family name Sudhirak (Sudhirak 
) , all around the world, is an extremely rare last name. The family name Sudhirak is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More frequently, Sudhirak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sudhirak | India, Thailand |