Cognomen Alanko (Alanko 
) , globally, is quite a rare surname. The family name Alanko is characteristic of Northern Europe, particularly Finland, where it is quite a common surname, Estonia, where it is quite a rare surname, and Sweden, where it is a rare surname. In absolute terms, this name is the most popular in Finland, Turkey, and Mozambique.
| VARIANT | COUNTRY |
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| Alanko | Turkey, Sweden, Finland, United States, Mozambique |
| matts alanko FI (b. 1828) |
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juho alanko Finnish lieutenant 1982–1943, FI (b. 1892) |
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ville alanko Finnish singer (1907-1931), FI (b. 1907) |
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| uuno alanko Finnish architect and painter (1878-1964), FI (b. 1878) |
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anna-liisa alanko Finnish writer, FI (b. 1935) |
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pentti alanko Finnish botanist, FI (b. 1936) |
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| matti edvard alanko (b. 1889) |
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| kustaa alanko Finnish politician (1905-1985), FI (b. 1905) |
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ismo alanko Finnish musician, FI (b. 1960) |
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ilkka alanko Finnish musician, FI (b. 1969) |
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rami alanko former Finnish ice hockey player, FI (b. 1975) |
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| meeri alanko (b. 1923) |
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| matti alanko Finnish professor, FI (b. 1935) |
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| timo alanko Finnish computer scientist, FI (b. 1941) |
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kaisa alanko Finnish volleyball player, FI (b. 1993) |
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