Surname วาณิชา (Vanicha 
, วาณิชา ) , globally, is a very rare family name. The surname วาณิชา is characteristic of Thailand, where it is a very rare surname, China, where it is an extremely rare surname, and India. Much more prevalently, วาณิชา is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Vanicha | China, Thailand, United States, India, Democratic Republic of the Congo |
| วาณิชา | Thailand |