Save Type Surname (from location) Usage Japanese Scripts 大沢, 大澤(Japanese Kanji) Pronounced Pron. /o̞.sa̠.ɰᵝa̠/ [key·simplify] Other Forms FormsŌsawa, Oosawa Meaning & History From Japanese 大 (o) meaning "big, great" and 沢 or 澤 (sawa) meaning "marsh".
indicate the level to which a name has been verified.