Surname สุนทรพจน์ (สุนทรพจน์ 
, Speech 
, Saysombath 
) , around the world, is a rare last name. The surname สุนทรพจน์ is habitual in Laos, where it is quite a rare surname, Thailand, where it is a rare surname, and Egypt. In absolute terms, the name is most common in Thailand, the United States, and Egypt. Very seldom, สุนทรพจน์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sunthornphot, สุนทรพจน์ | Thailand |
| Speech | Bangladesh, Tanzania, Egypt, United States, China |
| Saysombath | Australia, Thailand, Canada, United States, Laos |
Espeche, Soontharod, Soontornphot, Soontornpoj, Soontornsing, Soontorrapoj, Sountarapoj, Speets, Speich, Suntarapod, Suntarapot, Sunthorapot, Sunthornpoj, Suntiparaphob, Suntiphojjhana, Suntoraphot, Suntorapoj, Suntorapot, Suntornpoch, and Suntorraphot
| สิทธิพร สุนทรพจน์ TH |
|