Family name วงศ์ประสิทธิพร (วงศ์ประสิทธิพร 
, Wongprasitthiporn , Wongprasittiphorn ) , throughout the world, is a very rare surname. The surname วงศ์ประสิทธิพร is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Wongprasitthiporn, Wongprasittiphorn, วงศ์ประสิทธิพร | Thailand |