Family name ฮาร์ทวิก (ฮาร์ทวิก 
) , around the world, is an extremely rare surname. The cognomen ฮาร์ทวิก is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Very seldom, ฮาร์ทวิก is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ฮาร์ทวิก | Thailand |