Around the globe, Colquhoun (科洪 
, Calhoun 
, Colquhoun ) is a rare predominantly masculine, but very seldom girly forename. The first name Colquhoun is characteristic of the United States, where it is a very rare principally male, but scarcely girly name, and China. Much more frequently, Colquhoun is the last name as well as the forename.
| VARIANT | COUNTRY |
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| 科洪 | China |
| Colquhoun, Calhoun | Australia, Jamaica, Canada, United States, United Kingdom |
| Кохун | Ukraine, Russia |
Colquhoun is also a name for the fictitious and mythical characters: .
| sir john colquhoun, 1st baronet Scottish politician (b. 1595) |
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| archibald colquhoun Scottish politician and lawyer (1756-1820) (b. 1756) |
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| humphry colquhoun British Royal Navy officer, lieutenant in 1815 (1793-?) (b. 1793) |
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archibald ross colquhoun Rhodesian politician (1848-1914), ZA (b. 1848) |
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| ewing pye colquhoun author (19th century) (b. 1801) |
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| archibald colquhoun American politician – Minnesota -- "A." House 1873 (District 12); House 1881-82 (District 12), US (b. 1835) |
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| sir alan colquhoun, 6th baronet (1838-1910) (b. 1838) |
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| sir james colquhoun, 5th baronet (1844-1907) (b. 1844) |
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davie colquhoun Scottish footballer (1906-1983), GB (b. 1906) |
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| archibald colquhoun (b. 1850) |
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| archibald colquhoun English translator, GB (b. 1912) |
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| duncan colquhoun association football player (1915-2005) (b. 1915) |
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| alva colquhoun Australian swimmer, Olympic silver medallist, former world record-holder, AU (b. 1942) |
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| sir malcolm colquhoun, 9th baronet British aristocrat, landowner and school administrator (b. 1947) |
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| humphrey colquhoun (died 1722) |
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