Family name Madhuwanthi (Madhuwanthi 
) , all over the world, is quite a rare last name. The last name Madhuwanthi is habitual in Southern Asia, particularly Sri Lanka, where it is quite a common surname. Very seldom, Madhuwanthi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Madhuwanthi | Sri Lanka, Malaysia |