Family name Paisu (Paisu 
) , in all the world, is a rare last name. The cognomen Paisu is habitual in Estonia, where it is a rare surname, Romania, and Spain, where it is a very rare surname. Likewise, Paisu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Paisu | Estonia, Spain, India, Australia, Romania |