Surname Buddhasiri (พุทธศิริ 
, Buddhasiri 
) , worldwide, is a rare cognomen. The cognomen Buddhasiri is habitual in Thailand, where it is a rare surname, Czechia, and the United States, where it is an extremely rare surname. Much less frequently, Buddhasiri is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| พุทธศิริ | Thailand |
| Buddhasiri | Czechia, United States, Thailand |