Last name วานิช (วานิช 
, Vanich 
, Wanit 
) , across the world, is quite a rare surname. The surname วานิช is habitual in Thailand, where it is quite a rare surname, Malaysia, where it is a rare surname, and Italy, where it is a very rare surname. Not in comparison with a country's population, the name is most common in Thailand, Malaysia, and the United States. More prevalently, วานิช is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| วานิช | Thailand |
| Vanich | Italy, Democratic Republic of the Congo, United States, Thailand, Malaysia |
| Wanit | United States, Peru, Thailand, Malaysia, India |
| Wanich | Brazil, Spain, United States, Australia, Thailand |