Surname Kowalchuk (Kowalchuk 
) , across the world, is quite a rare family name. The surname Kowalchuk is habitual in Bermuda, where it is quite a rare surname, Canada, and Israel. In absolute terms, it most frequently occurs in Canada, the United States, and Israel.
| VARIANT | COUNTRY |
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| Kowalchuk | Canada, United States, Argentina, Israel, Japan |
| john russell kowalchuk Canadian politician, CA (b. 1921) |
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| ed kowalchuk Canadian politician, CA (b. 1926) |
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| george a kowalchuk researcher |
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| roman o kowalchuk researcher (ORCID 0000-0001-6142-6310) |
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| scott a. kowalchuk Ph.D. Virginia Polytechnic Institute and State University 2007 |
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| ken kowalchuk CA |
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