Cognomen Westerlaken (Westerlaken 
) , globally, is a rare last name. The family name Westerlaken is characteristic of Netherlands, where it is quite a rare surname, Slovenia, and Belgium, where it is a rare surname. In absolute terms, the name is most common in Netherlands, Australia, and Slovenia.
| VARIANT | COUNTRY |
|---|---|
| Westerlaken | Australia, Canada, Netherlands, Belgium, Slovenia |
| anton westerlaken Dutch trade unionist, NL (b. 1955) |
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| bart westerlaken Dutch composer, NL (b. 1977) |
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| lucette van der westerlaken researcher (ORCID 0000-0001-6245-0056) |
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| nick van der westerlaken Belgian association football player, BE (b. 1985) |
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| l. westerlaken |
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