Surname
Ōnuma
Ōnuma (大沼) is a Japanese surname. Its kanji mean big + marsh, and Wikidata lists 36 notable people with this family name.
お · お · ぬ · ま · おおぬま
What Ōnuma means
大
big, great
沼
marsh, pond
Where the name comes from
The kanji of Ōnuma mean big + marsh. Many surnames like it began as descriptions of a family's land, trade or position before surnames were required for every household in 1875.