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 | Germany, Switzerland, France, Brazil, United States |
| Kyler | Germany, Canada, United States, United Kingdom, South Africa |
| Cuyler | Australia, Canada, United States, United Kingdom, Argentina |
| 凯勒 | China |