Cognomen Paxau (Paxau 
) , in the entire world, is an extremely rare last name. The cognomen Paxau is characteristic of Latin America and the Caribbean, particularly Argentina, where it is an extremely rare surname. More prevalently, Paxau is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Paxau | Argentina, Spain |
| josep maria rovira i paxau Catalan motor engineer, ES (b. 1952) |
|