Cognomen Kirker (柯克 
, Kirker 
, Киркер 
) , in all the world, is quite a rare last name. The last name Kirker is habitual in New Zealand, where it is a rare surname, Poland, and the United States. Not in comparison with a country's population, it is the most numerous in the United States, Poland, and the United Kingdom. Very seldom, Kirker is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 柯克 | China |
| Kirker | Canada, Turkey, Poland, United States, United Kingdom |
| Киркер | Russia |
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thomas kirker American politician (1760–1837), US (b. 1760) |
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| james kirker American frontiersman, US (b. 1793) |
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| william kirker New Zealand cricketer, NZ (b. 1866) |
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| marion kirker New Zealand photographer, NZ (b. 1879) |
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| harold kirker American architectural historian, US (b. 1921) |
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| anne kirker New Zealand museum professional and writer (1947— ), NZ (b. 1947) |
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| constance l. kirker US (b. 1949) |
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| stephen kirker researcher |
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