Last name Matnai (Matnai 
) , around the globe, is a very rare surname. The family name Matnai is habitual in Indonesia, where it is a very rare surname, Thailand, where it is an extremely rare surname, and the United Kingdom. In absolute terms, it is the most numerous in Indonesia, India, and Thailand. Much less frequently, Matnai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Matnai | Indonesia, United Kingdom, Brazil, India, Thailand |