Vainio Family History
Vainio Surname Meaning
Finnish: ornamental name from vainio ‘field’ one of the most common surnames adopted mainly in southern Finland in the late 19th and early 20th centuries especially during the name-changing campaigns by Finns with Swedish surnames (compare Laine).
In northern Finland this is also a habitational name from farms so named.
This standard Finnish variant is rare in the US where the surname is mostly spelled Wainio.
Source: Dictionary of American Family Names 2nd edition, 2022
