Surname Swangsilp (Swangsilp 
) , worldwide, is a very rare cognomen. The last name Swangsilp is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Swangsilp | Thailand |
Wanida, Sorasich, Monnarin, Natthanon, and Rassameeduean