Herttuainen

== Finnish == === Etymology === herttua +‎ -inen === Pronunciation === IPA(key): /ˈhertːuɑi̯nen/, [ˈhe̞rt̪ːuˌɑ̝i̯ne̞n] Rhymes: -ɑinen Syllabification(key): Hert‧tu‧ai‧nen Hyphenation(key): Hert‧tu‧ai‧nen === Proper noun === Herttuainen a Finnish surname ==== Declension ==== ==== Statistics ==== Herttuainen is the 3023rd (tied with 5 other surnames) most common surname in Finland, belonging to 257 individuals, according to August 2025 data from the Digital and Population Data Services Agency of Finland.