Cognomen Hienonen (Hienonen 
) , worldwide, is a rare family name. The family name Hienonen is characteristic of Finland, where it is quite a rare surname, Estonia, where it is a rare surname, and Spain, where it is a very rare surname. Much less frequently, Hienonen is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Hienonen | Spain, Estonia, Finland |
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erkki hienonen Finnish painter (1933-2010), FI (b. 1933) |
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| jukka hienonen Finnish businessman, FI (b. 1961) |
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| ninja hienonen researcher ORCID ID = 0000-0001-9381-9442 |
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