Surname Kuusler (Kuusler 
) , all over the world, is a very rare family name. The surname Kuusler is characteristic of Estonia, where it is quite a rare surname, Switzerland, where it is a rare surname, and Germany, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kuusler | Estonia, Germany, Switzerland |
| elmar kuusler (b. 1913) |
|