Oulujärvi

== Finnish == === Etymology === From Oulu +‎ järvi (“Lake Oulu”). === Pronunciation === IPA(key): /ˈou̯luˌjærʋi/, [ˈo̞u̯luˌjærʋi] Rhymes: -ærʋi Syllabification(key): Ou‧lu‧jär‧vi Hyphenation(key): Oulu‧järvi === Proper noun === Oulujärvi The fifth largest lake in Finland. a Finnish surname ==== Declension ==== ==== Statistics ==== The surname Oulujärvi belongs to 52 individuals, according to August 2025 data from the Digital and Population Data Services Agency of Finland.