Surname สว่างไสว (สว่างไสว, Sawangpai 
, Sawangkhae ) , in the world, is a very rare cognomen. The cognomen สว่างไสว is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Sawangkhae, Sawangpai, Sawangweang | Thailand |
Bright, Brightiato, Phiwsawng, Saeawang, Sagawjai, Sawaengsai, Sawanga, Sawangaphai, Sawangcahi, Sawanget, Sawangha, Sawanglit, Sawangphaew, Sawangroat, Sawangsab, Sawangsai, Sawangsawai, Sawangseang, Sawangsee, Sawangsiy, Sawangtis, Sawanhg, Sawhangsai, Sawhong, Sawrengsai, Sawsai, Soaweang, Sungsangsai, and Swangpaisark