Save Type Surname (from location) Usage Japanese Scripts 小泉(Japanese Kanji) こいずみ(Japanese Hiragana) Pronounced Pron. /ko̞.i.zɨᵝ.mi/ [key·simplify] Meaning & History From Japanese 小 (ko) meaning "small" and 泉 (izumi) meaning "spring, fountain". A notable bearer of this name is Junichiro Koizumi (1942-), who was Prime Minister of Japan. Related Names Rootsko + izumi Categories sizes, water