Family name Onno (Onno 
, Онно 
, オンノ) , across the world, is quite a rare last name. The cognomen Onno is characteristic of Mauritius, where it is quite a rare surname, Estonia, and Papua New Guinea. Not in comparison with a country's population, it is commonest in France, Indonesia, and Papua New Guinea. More frequently, Onno is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Onno | Bangladesh, Germany, France, Netherlands, Japan |
| Онно | Russia, Ukraine |
| ferdinand onno Austrian actor (1881-1969), AT (b. 1881) |
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| aleksander onno Estonian politician, EE (b. 1898) |
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| max onno Austrian botanist, AT (b. 1903) |
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| paul onno (b. 1902) |
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| samuel onno EE (b. 1911) |
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| sven onno Estonian ornithologist (1932-1974), EE (b. 1932) |
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| kalle onno EE (b. 1927) |
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| françoise onno (b. 1965) |
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| anthony onno French politician, FR (b. 1977) |
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| karin a onno researcher |
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| svea onno Estonian table tennis player, EE |
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| jérôme onno FR (b. 1975) |
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| onno w. van onno |
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| jocelyn onno |
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