Family name สุนทรวงศ์ (สุนทรวงศ์ 
, Sunpawong, Sunthorwong ) , throughout the world, is a rare surname. The surname สุนทรวงศ์ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| สุนทรวงศ์, Suntalakvong, Sunthorwong | Thailand |
Sonthornwong, Soonthavong, Soonthawong, Soontornwong, Sountharavong, Sumnnawong, Suntarawong, Sunthonwong, Sunthornwong, Suntornwong, and Suntronwong