Surname วิศว์ (Wit 
, วิศว์ , Witsa 
) , in the world, is a common cognomen. The surname วิศว์ is habitual in Netherlands, where it is a common surname, British Virgin Islands, where it is quite a common surname, and Belgium (explore the name in all countries). In absolute terms, it most frequently occurs in Netherlands, Poland, and Belgium. Much less frequently, วิศว์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wit | Myanmar, Thailand, Poland, Netherlands, Belgium |
| วิศว์ | Thailand |
| Witsa | Brazil, Thailand, United States |
จูภาวัง, โทรัตน์, วิศวประทีป, รัตนโชติ, and สุทธิศิลธรรม