Last name จิรวงศ์พณิช (จิรวงศ์พณิช 
) , all around the world, is a very rare surname. The cognomen จิรวงศ์พณิช is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| จิรวงศ์พณิช | Thailand |
พงศกร, and เพ็ญภักดิ์