Cognomen Pihu (Pihu 
, بييو 
) , all over the world, is quite a rare last name. The cognomen Pihu is characteristic of Estonia, where it is quite a common surname, Bangladesh, where it is a rare surname, and Sudan. Measured by absolute frequency, the name is most common in Bangladesh, Estonia, and Indonesia. Also, Pihu is the forename as well as the last name.
| abel pihu (b. 1890) |
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| pihu walis (b. 1914) |
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| ervin pihu Estonian ichthyologist, EE (b. 1930) |
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| evi pihu Estonian biologist, EE (b. 1935) |
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| tõnu pihu Estonian engineer, EE (b. 1957) |
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| silvia pihu Estonian botanist, EE (b. 1966) |
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| pihu sethi researcher (ORCID 0000-0003-3633-5841) |
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