Worldwide, Maclachlan (Maclachlan 
) is an extremely rare boy's given name. Much more frequently, Maclachlan is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Maclachlan | Canada, United Kingdom, United States, South Africa, Australia |
| lauchlan maclachlan Maclachlan, Lauchlan (1688–1746), Jacobite army officer and chief of clan Lachlan (Lachlainn) (b. 1688) |
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| ewen maclachlan British writer, GB (b. 1775) |
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| archibald neil campbell maclachlan author and vicar of Newton Valence, England (b. 1820) |
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| crawford maclachlan British Royal Navy admiral (b. 1867) |
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| ross maclachlan Canadian rower, CA (b. 1950) |
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| colina maclachlan Peerage person ID=510911 (b. 1953) |
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| ross maclachlan Canadian musician, CA (b. 1957) |
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| crawford maclachlan Peerage person ID=510910 (b. 1958) |
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| graham maclachlan FR (b. 1969) |
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| archibald maclachlan, 15th of maclachlan (died 1687) |
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| ewen maclachlan Peerage person ID=504063 |
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| duncan maclachlan Peerage person ID=273542 |
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| unknown maclachlan Peerage person ID=503462 |
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| lara s maclachlan researcher |
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| duncan macbrayne maclachlan Peerage person ID=273541 |
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