Family name Ruotsalainen (Ruotsalainen 
) , in all the world, is quite a rare cognomen. The last name Ruotsalainen is characteristic of Northern Europe, particularly Finland, where it is quite a common surname, Estonia, where it is quite a rare surname, and Sweden. Measured by absolute frequency, this name is the most popular in Finland, Sweden, and the United States.
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| Ruotsalainen | Sweden, Finland, United States, Estonia, Denmark |
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paavo ruotsalainen Finnish lay preacher and the leader of the revivalist Awakening religious movement (1777-1852), FI (b. 1777) |
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| juhana ruotsalainen (b. 1809) |
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hjalmar ruotsalainen FI (b. 1899) |
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| aatu ruotsalainen Finnish politician, FI (b. 1859) |
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| tahvo ruotsalainen Finnish politician (1871-1954), FI (b. 1871) |
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| j. f. ruotsalainen Finnish journalist (1877-1951), FI (b. 1877) |
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| alfred ruotsalainen Finnish artist, FI (b. 1884) |
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| paavo ruotsalainen Finnish politician, FI (b. 1887) |
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| gabriel ruotsalainen Olympic athlete, FI (b. 1893) |
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| sirkka ruotsalainen Finnish journalist (1901–1995), FI (b. 1901) |
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| veikko hannes ruotsalainen Finnish skier, FI (b. 1908) |
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| edvin ruotsalainen (b. 1899) |
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reijo ruotsalainen Finnish ice hockey player, FI (b. 1960) |
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| unto ruotsalainen Finnish politician, FI (b. 1922) |
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| juhani ruotsalainen finnish biologist (b. 1937) |
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