Last name 凯勒 (Keller 
, Kyler 
, Cuyler 
) , in all the world, is a widespread family name. The family name 凯勒 is characteristic of Western Europe, particularly Switzerland, where it is a common surname, Liechtenstein, and Germany, where it is quite a common surname (explore the name in all countries). Not in comparison with a country's population, it is commonest in the United States, Germany, and Switzerland. Much less frequently, 凯勒 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Keller | Switzerland, France, Brazil, United States, Germany |
| Kyler | United Kingdom, United States, South Africa, Germany, Canada |
| Cuyler | United Kingdom, Australia, United States, Canada, Argentina |
| 凯勒 | China |