Family name จิตเจียรนัย (Jiannai 
, จิตเจียรนัย 
) , all over the world, is an extremely rare last name. The family name จิตเจียรนัย is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More prevalently, จิตเจียรนัย is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Jiannai | China |
| จิตเจียรนัย | Thailand |