Last name Lahtinen (Lahtinen 
, Лахтинен 
) , throughout the world, is a common surname. The last name Lahtinen is habitual in Northern Europe, particularly Finland, where it is a common surname, Estonia, where it is quite a rare surname, and Sweden. Not in comparison with a country's population, it is the most numerous in Finland, the United States, and Sweden.
| VARIANT | COUNTRY |
|---|---|
| Lahtinen | Sweden, Finland, United States, Estonia, Canada |
| Лахтинен | Russia |
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väinö samuli lahtinen (1889-1965), FI (b. 1889) |
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allan lahtinen FI (b. 1894) |
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lauri lahtinen Finnish opera singer (1913-1990), FI (b. 1913) |
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| william lahtinen Titanic victim (b. 1876) |
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| arvi lahtinen Finnish politician, FI (b. 1877) |
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| anna amelia lahtinen Titanic victim (b. 1878) |
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urpo lahtinen Finnish journalist, FI (b. 1931) |
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| william lahtinen US (b. 1876) |
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juhani lahtinen Finnish ice hockey player (1938-2018), FI (b. 1938) |
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| hugo lahtinen Finnish pentathlete, FI (b. 1891) |
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aatos lahtinen Finnish mathematician and professor emeritus, FI (b. 1942) |
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| varma lahtinen Finnish film actor (1894-1976), FI (b. 1894) |
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| impi lahtinen Finnish cross-country skier, FI (b. 1900) |
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| väinö lahtinen FI (b. 1897) |
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| william lahtinen FI (b. 1900) |
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