Cognomen Кетлер (Ketler 
, Kettler 
, Кетлер 
) , in the world, is quite a common surname. The last name Кетлер is habitual in Germany, where it is quite a rare surname, Austria, and Hungary. Measured by absolute frequency, it is commonest in Germany, the United States, and Canada. Very seldom, Кетлер is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ketler | Hungary, United States, France, Canada, Germany |
| Kettler | United States, Austria, France, Canada, Germany |
| Кетлер | Ukraine, Russia, Kazakhstan |
|
анна кетлер (1567-1617), LV (b. 1567) |
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фридрих кетлер aristocrat from Latvia, LV (b. 1569) |
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вильгельм кетлер Duke of Courland, LV (b. 1574) |
|
| елизавета кетлер LV (b. 1575) |
|
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| фридрих фон кетлер LV (b. 1682) |
|
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| леопольд карл фон кетлер LV (b. 1693) |
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