Family name ไพโรจน์ทินกร (ไพโรจน์ทินกร 
) , around the world, is an extremely rare cognomen. The family name ไพโรจน์ทินกร is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| ไพโรจน์ทินกร | Thailand |