Cognomen Kostick (Kostick 
) , all over the world, is a rare last name. The family name Kostick is characteristic of Canada, where it is a rare surname, the United States, and New Zealand, where it is a very rare surname. Measured by absolute frequency, it most frequently occurs in the United States, Canada, and the United Kingdom.
| VARIANT | COUNTRY |
|---|---|
| Kostick | United Kingdom, Australia, United States, Canada, Brazil |
| ken kostick Canadian chef and television and radio personality (1953-2011), CA (b. 1953) |
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| conor kostick Irish writer and historian, GB (b. 1964) |
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| kristin marie kostick researcher |
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