Surname Psau (Psau 
) , all around the world, is an extremely rare cognomen. The surname Psau is habitual in Northern America, particularly Canada, where it is a very rare surname, and the United States, where it is an extremely rare surname. Very seldom, Psau is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Psau | United Kingdom, Canada, United States |