In all the world, ทันใจ (ทันใจ 
, Thanchai 
, Thunjai 
) is a rare unisex first name. The first name ทันใจ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare gender-neutral name. More frequently, ทันใจ is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| ทันใจ | Thailand |
| Thanchai | United States, India, Thailand |
| Thunjai | Trinidad and Tobago, Thailand |