Koizumi
Koizumi is the name of the following places:
- a former town in Gunma Prefecture, incorporated into Ōizumi (Gunma)
- a former village in Fukushima Prefecture, incorporated into Kōriyama
- a former village in Ampachi-gun in Gifu Prefecture, incorporated into Ōgaki
- a former village in Kani-gun in Gifu Prefecture, incorporated into Tajimi
- a former village in Hiroshima Prefecture, incorporated into Mihara
- a former village in Miyagi Prefecture, incorporated into Motoyoshi (Miyagi)
- a former village in Shizuoka Prefecture, incorporated into Susono
- a former village in Yamanashi Prefecture, incorporated into Hokuto (Yamanashi)
- a Japanese fief, see Koizumi (Han)
Koizumi is a family name for the following people:
- Ariane Koizumi (* 1963), American actress and model
- Koizumi Chikashi (1886–1927), Japanese poet
- Gen'ichi Koidzumi (1883–1953), Japanese botanist
- Gunji Koizumi (1885–1965), founder of British judo
- Koizumi Hiroshi (1926-2015), Japanese actor
- Jun'ichirō Koizumi (* 1942), Japanese politician, MP, Minister of State (Premier, Health, Post)
- Junji Koizumi (* 1968), Japanese football player
- Koizumi Jun'ya (1904–1969), Japanese politician, MP and Minister of State (defense)
- Kazuhiro Koizumi (* 1949), Japanese conductor
- Kazunari Koizumi (* 1993), Japanese ice hockey player
- Kei Koizumi (* 1995), Japanese soccer player
- Keiji Koizumi (* 1976), Japanese football player
- Koizumi Kishio (1893–1945), Japanese painter
- Kōtarō Koizumi (* 1978), Japanese actor
- Koizumi Matajirō (1865-1951), Japanese politician, MP and Minister of State (communications)
- Satoshi Koizumi (* 1985), Japanese football player
- Shinjirō Koizumi (* 1981), Japanese politician, MP
- Koizumi Shinzō (1888–1966), Japanese economist
- Takashi Koizumi (* 1944), Japanese film director
- Koizumi Yakumo (1850–1904), Irish-Greek writer, see Lafcadio Hearn
- Yoshiaki Koizumi (* 1968), Japanese game developer
- Yoshio Koizumi (* 1996), Japanese football player
- Yūto Koizumi (* 1995), Japanese football player
