Surname ザック (Zak 
, Zach , Zack 
, among others...) , all over the world, is a common last name. The cognomen ザック is characteristic of Slovakia, where it is a common surname, Czechia, where it is quite a common surname, and Austria (explore the name in all countries). In absolute terms, the name is most common in the United States, Germany, and Poland. Also, ザック is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Zach, Zak | Germany, Slovakia, Kenya, United States, Poland |
| Zack, Zac | Czechia, Germany, Kenya, United States, Poland |
| Sack | Czechia, Australia, Germany, United States, Poland |
| Zakk | Morocco, Australia, Indonesia, United States, Algeria |
| ザック | Japan |