Last name Асау (Asau 
, Асау 
, 麻生 
) , around the world, is a rare family name. The cognomen Асау is characteristic of Malaysia, where it is a rare surname, Myanmar, and Kazakhstan, where it is a very rare surname. In absolute terms, it is the most numerous in South-eastern Asia, particularly Indonesia, Myanmar, and Malaysia. More frequently, Асау is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Asau | Indonesia, Malaysia, Nigeria, India, Myanmar |
| Асау | Azerbaijan, Kazakhstan |
| 麻生 | China |
| Asaou | India, Nigeria |