Uchisaiwaichō (内幸町) is a neighborhood in Chiyoda, Tokyo, at the south-east corner of the ward bordering with Chūō and Minato. Its postal code is 100-0011.

Uchisaiwaichō Station on the Toei Mita Line is located in the area.


In the late Edo period, the present-day Uchiwaisaichō area was a part of the Hibiya area with many daimyo's mansions and was located within the outer moat of the Edo Castle. Uchisaiwaichō, literally meaning "Inner Saiwai District," is considered to be named after its location between Saiwaibashi Bridge (幸橋 Saiwaibashi) on the Outer Moat and Saiwai Gate (幸御門 Saiwai-gomon).

After the Meiji Restoration, the term "Uchisaiwaichō" was introduced as a neighborhood in Tokyo.


China Airlines operates the Tokyo office in Uchisaiwaichō.[2]

When Yamato Life existed, its headquarters was in Uchisaiwaichō.[3]


  1. "Office locations." Kroll Inc. Retrieved on 14 August 2011. "Tokyo 24/F NBF Hibiya Building, 1-7 Uchisaiwaicho 1-chome Chiyoda-ku Tokyo 100-0011 Japan" "Tokyo (Kroll Ontrack) 24/F NBF Hibiya Building 1-7 Uchisaiwaicho 1-chome Chiyoda-ku 100-0011 Japan"
  2. "Northeast Asia." China Airlines. Retrieved on August 30, 2011. "Tokyo 8F, 1-2-1, Uchisaiwaicho, Chiyoda-ku, Tokyo, Japan"
  3. "会社概要." Yamato Life. February 5, 2005. Retrieved on January 20, 2010. "所在地 〒100-0011東京都千代田区内幸町一丁目1番7号"
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