Surname สิริวุทธิโยทัย (สิริวุทธิโยทัย 
) , in all the world, is an extremely rare cognomen. The family name สิริวุทธิโยทัย is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| สิริวุทธิโยทัย | Thailand |