Family name Sewwandika (Sewwandika 
) , around the globe, is a rare surname. The last name Sewwandika is characteristic of Southern Asia, particularly Sri Lanka, where it is quite a rare surname. Very seldom, Sewwandika is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sewwandika | Sri Lanka |
Ruwani, Dinukshi, Dimuthu, Shalinya, and Swarnapali