Cognomen Nobai (Nobai 
) , all around the world, is a very rare family name. The surname Nobai is habitual in Malaysia, where it is a very rare surname, and India, where it is an extremely rare surname. More prevalently, Nobai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Nobai | Philippines, Tanzania, Japan, Malaysia, India |