Family name Pengwichai (Pengwichai 
) , worldwide, is a rare last name. The last name Pengwichai is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname, and Singapore.
| VARIANT | COUNTRY |
|---|---|
| Pengwichai | Singapore, Thailand |
| thidarat pengwichai volleyball player, TH (b. 1992) |
|