Surname Risku (Risku 
) , in the world, is quite a rare cognomen. The cognomen Risku is characteristic of Finland, where it is quite a rare surname, Estonia, where it is a rare surname, and Ethiopia. Measured by absolute frequency, it is commonest in Ethiopia, Finland, and Nigeria. Also, Risku is the forename as well as the last name.
| s. e. risku FI (b. 1890) |
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| juhani risku Finnish architect, FI (b. 1956) |
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| rainer risku ice hockey player, FI (b. 1958) |
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| jari risku Finnish ice hockey coach, FI (b. 1966) |
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| hannu risku Finnish musician, FI (b. 1978) |
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| pekka risku Ph.D. Jyväskylän yliopisto 1996 |
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| eemeli risku FI |
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| elina risku Finnish speed skater, FI (b. 1992) |
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