Cognomen Amwai (Amwai 
) , in all the world, is a rare family name. The last name Amwai is habitual in Kenya, where it is quite a rare surname, Nigeria, where it is an extremely rare surname, and the United States. Very seldom, Amwai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Amwai | Nigeria, Kenya, United States, India |