Cognomen Werahera (Werahera 
) , all around the world, is a rare last name. The cognomen Werahera is habitual in Sri Lanka, where it is a rare surname, Canada, where it is an extremely rare surname, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Werahera | United States, Sri Lanka, Canada |
| priya n werahera Ph.D. Colorado State University 1994 |
|