Last name Laitinen (Laitinen 
, ライティネン, Лайтинен 
) , in the world, is a common surname. The last name Laitinen is characteristic of Northern Europe, particularly Finland, where it is a common surname, Aland Islands, where it is quite a common surname, and Estonia, where it is quite a rare surname. Measured by absolute frequency, it is the most numerous in Finland, the United States, and Sweden.
| aatu laitinen Finnish priest (1853-1923), FI (b. 1853) |
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arvo laitinen FI (b. 1893) |
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toivo laitinen Finnish priest (1905-1977), FI (b. 1905) |
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| taavetti laitinen Finnish journalist, FI (b. 1866) |
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kaarlo laitinen Finnish military personnel (1920-1944), FI (b. 1920) |
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| juho laitinen Finnish politician (1871-1946), FI (b. 1871) |
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| kristina sofia laitinen Titanic victim (b. 1873) |
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kai laitinen Finnish professor of domestic literature and literary critic, FI (b. 1924) |
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| a. a. a. laitinen Finnish educator (1878-1940), FI (b. 1878) |
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| artturi laitinen Finnish politician (1882-1959), FI (b. 1882) |
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keijo laitinen Finnish musician, FI (b. 1934) |
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| onni laitinen Finnish physician (1886-1935), FI (b. 1886) |
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| lauri laitinen FI (b. 1882) |
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| eino laitinen Finnish politician, FI (b. 1893) |
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aarno laitinen Finnish journalist, FI (b. 1943) |
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