Last name Nathai (Nathai 
) , in all the world, is a rare family name. The surname Nathai is habitual in Trinidad and Tobago, where it is quite a rare surname, Tanzania, where it is a rare surname, and Thailand, where it is a very rare surname. In absolute terms, this name is the most popular in India, Tanzania, and Trinidad and Tobago. More prevalently, Nathai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Nathai | Tanzania, Thailand, Pakistan, India, Trinidad and Tobago |