Surname ปิยกาญจน์สิริ (ปิยกาญจน์สิริ 
) , across the world, is an extremely rare family name. The cognomen ปิยกาญจน์สิริ is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| ปิยกาญจน์สิริ | Thailand |