Family name Wanasiri (Wanasiri 
, วนาศิริ , วจนะศิริ ) , in the world, is a rare cognomen. The surname Wanasiri is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Much less frequently, Wanasiri is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wanasiri | Nigeria, Thailand |
| วจนะศิริ, วนาศิริ | Thailand |