Cognomen Siriwadhana (Siriwadhana 
) , globally, is an extremely rare family name. The family name Siriwadhana is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Also, Siriwadhana is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Siriwadhana | United States, Thailand |
| ayana siriwadhana Sri Lankan cricketer (b. 1999) |
|