Family name Duwani (Duwani 
) , across the world, is a rare last name. The last name Duwani is habitual in Burkina Faso, where it is a rare surname, Tanzania, where it is a very rare surname, and India, where it is an extremely rare surname. Much less frequently, Duwani is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Duwani | Tanzania, South Africa, Burkina Faso, Philippines, India |