Cognomen Treherne (Treherne 
) , across the world, is a rare last name. The cognomen Treherne is habitual in the United Kingdom, where it is a rare surname, Latvia, and Australia. Not in comparison with a country's population, this name is the most popular in the United Kingdom, the United States, and Australia. Very seldom, Treherne is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Treherne | United Kingdom, Canada, Australia, South Africa, United States |
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g. g. t. treherne Welsh antiquary, GB (b. 1837) |
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george treherne Canadian professional ice hockey player, CA (b. 1884) |
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| harold treherne Stamp forger (b. 1884) |
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| reginald charles treherne British entomologist (1886-1924), CA (b. 1886) |
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| mary josephine treherne 1889 - (b. 1889) |
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| edmund treherne (1896-1958) (b. 1896) |
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| robert treherne (1925-2016) (b. 1925) |
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| j. e. treherne English entomologist and physiologist, GB (b. 1929) |
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| oona cicely treherne (born 1930) (b. 1930) |
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| geoffrey avenal treherne (1930-2015) (b. 1930) |
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| roland dalrymple treherne (1935-1992) (b. 1935) |
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| mary treherne (born 1952) (b. 1952) |
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| thomas treherne (born 1953) (b. 1953) |
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| patrick treherne (born 1955) (b. 1955) |
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| henry treherne (born 1956) (b. 1956) |
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