Coordinates: 35°35′23″N 139°43′44″E / 35.58972°N 139.72889°E / 35.58972; 139.72889 Ōmori (大森) is a district located a few kilometres south of Shinagawa, Tokyo, Japan accessed by rail via the Keihin Tohoku line, or by road via Dai Ichi Keihin. Ōmorikaigan, the eastern area of Ōmori, can be reached via the Keikyu line.

Ōmori Belport, headquarters of Isuzu

Ōmori is one of many areas in Tokyo's largest ward, Ōta-ku, and was formerly home to the German International School before its relocation to Yokohama. High quality residential and retail developments that the German school attracted are present in the Ōmori-sannō area. Ōmori is home to the headquarters of the automotive company Isuzu, which has offices in the Belport complex a few hundred metres from Ōmori station.

Prior to its development as a convenient[to whom?] residential and business location, Ōmori was laced with a network of small rivers which were used by many locals for drying harvested nori (seaweed)[clarification needed], a staple of the Japanese diet. Modern Ōmori is built on mostly reclaimed land, and is very much a traditional Shinto area; there are many shrines in the area, and during the August o-bon festival, mikoshi parades are very common.

Ōmori-sannō, to the west of Ōmori station, is an upscale neighbourhood compared to the other side of the tracks, and Ōmori-sannō is known to be traditionally an area where Japanese poets, philosophers and writers have made their home.

World War II POW CampEdit

Ōmori was the site of an Imperial Japanese Army-administered prisoner-of-war camp during World War II. The inhumane conditions in the camp were described in detail in the book Unbroken: A World War II Story of Survival, Resilience, and Redemption describing the life of American Olympic Athlete Louis Zamperini. The camp was brutal and included in its staff known war criminal Mutsuhiro Watanabe. However, US Navy submarine commander Richard O'Kane found Omori camp harsh, but essentially correct in administration, particularly compared with the Ōfuna Imperial Japanese Navy detention centre. Local anti-militarist Japanese civilians sometimes helped the prisoners with small gifts of food.[1][2]

Two OmorisEdit

Ōmori has two meanings:

  1. Area around JR Ōmori station.
  2. Town of Ōmori.

While Ōmori station opened in 1876 and is widely known to outsiders, the "town of Ōmori" was renamed in 1970 and is less known, and even local residents are often confused. Broadly, the west side of JR Ōmori station is still Ōmori but generally speaking it is considered Sannō area, an uptown.[clarification needed]


Ota operates the public elementary and junior high schools in Ōmori.

Tokyo Metropolitan Government Board of Education operates Ōmori High School[3]

Private high schools include Tokyo High School.


  • Heiwa-no-mori Park. Largest park in Ota-ku (99,000 m²)
  • Heiwajima Park. Includes: baseball ground; barbecue park (2,200 yen for ward residents, 2,600);[4] swimming pool (inside and outside)[5]
  • Ōmori-furusato-no-hamabe Park.[6] Maritime park. Local elementary school children call it "Furuhama". Particulars: Free entrance; Closed at night; Fishing is allowed in the rocky stretch of water; Campfires are not allowed; Benches and some tables available; Drinking water; Toilets and no showers; The chlorine count usually exceeds the "suitable to swim" level so swimming is prohibited); No shade from sun, and unlike Odaiba beach, there is no shops around the beach; Parking lot is not near.


  1. ^ O'Kane, Richard H. Clear the Bridge! The War Patrols of the USS Tang London Macdonald & Jane's 1978 pp465-6 ISBN 0354011855
  2. ^ Cory Graff (August 2020). "Explore This Stirring Photo of World War 2 POWs at the Moment They're Freed". Air and Space Magazine.
  3. ^ "Hello World.|東京都立大森高等学校".
  4. ^ "平和島公園キャンプ場".
  5. ^ City, Ota. "大田区ホームページ:平和島公園プール".
  6. ^ "大森ふるさとの浜辺の整備".

External linksEdit

  Media related to Omori, Tokyo at Wikimedia Commons