Surname Kolff (克福 
, Kolff 
, كولف 
) , across the world, is quite a rare cognomen. The surname Kolff is characteristic of Netherlands, where it is quite a rare surname, Iraq, where it is a rare surname, and New Zealand. Not in comparison with a country's population, it is the most numerous in China, Netherlands, and Iraq. More frequently, Kolff is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 克福 | China |
| Kolff | United Kingdom, Netherlands, Australia, Argentina, United States |
| كولف | Iraq |
| קולף | Israel |
| gualtherus kolff 1 Apr 1711 Middelharnis - 16 Dec 1789 Rotterdam (b. 1711) |
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| adrianus quirinus kolff 22 Jun 1745 Middelharnis - 23 Jul 1826 Middelharnis (b. 1745) |
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| dirk hendrik kolff (1761-1835) (b. 1761) |
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| cornelia elizabeth kolff 14 Apr 1773 Middelharnis - 3 Oct 1851 Brielle (b. 1773) |
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| gualtherus kolff (1775-1846) (b. 1775) |
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gualtherus johannes cornelis kolff Dutch publisher and journalist, NL (b. 1826) |
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| dirk hendrik kolff Naval officer, NL (b. 1800) |
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adriaan dirk hendrik kolff Dutch politician (1862-1921), NL (b. 1862) |
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gualthérus kolff Dutch politician (1879-1959), NL (b. 1879) |
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jan gualtherus van breda kolff Dutch footballer (1894-1976), NL (b. 1894) |
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| gualtherus johannes kolff Dutch founder of the library for the blind (b. 1846) |
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benjamin kolff mayor of Vlissingen (1902-1982), NL (b. 1902) |
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| jacques van santen kolff NL (b. 1848) |
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butch van breda kolff American basketball player and coach, US (b. 1922) |
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| tim kolff Dutch politician (1882-1944), NL (b. 1882) |
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