Family name Umadas (Umadas 
) , globally, is a rare last name. The surname Umadas is characteristic of Malaysia, where it is a very rare surname, Canada, and the United States, where it is an extremely rare surname. In absolute terms, it most frequently occurs in India, the United States, and Malaysia. More prevalently, Umadas is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Umadas | Canada, Philippines, United States, Malaysia, India |