Family name แพเจริญชัย (แพเจริญชัย 
, Paejaroenchai , Paecharenchai) , worldwide, is a very rare last name. The cognomen แพเจริญชัย is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Paejaroenchai, แพเจริญชัย, Paechareonchai | Thailand |