Family name Treslong (Treslong 
) , in the world, is an extremely rare cognomen. The family name Treslong is habitual in Western Europe, particularly Netherlands, where it is a very rare surname, and Germany, where it is an extremely rare surname.
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| Treslong | Germany, Netherlands |
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willem bloys van treslong Dutch nobleman (1529–1594), NL (b. 1529) |
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willem otto bloys van treslong politician (1765-1837), NL (b. 1765) |
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| cornelis ysaac bloys van treslong Belgian navy officer (1763-1828), NL (b. 1763) |
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| jacob arnout bloys van treslong NL (b. 1756) |
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| lodewijk bloys van treslong, heer van cabouw - 1470 |
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| christina bloys van treslong - 21 Nov 1620 Utrecht |
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| adriaen bloys van treslong - 1573 |
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| adriaen bloys van treslong - 7 Mar 1526 |
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| anna bloys van treslong |
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| hugo bloys van treslong |
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| adriaen van bloys van treslong |
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| lodewijk bloys van treslong |
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| catharina bloys van treslong |
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| catharina van bloys van treslong |
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