| Unit Name: | Army of Tokyo Bay |
| Dates: | June 19, 1945 – August 15, 1945 |
| Country: | Empire of Japan |
| Branch: | Imperial Japanese Army |
| Type: | Infantry |
| Role: | Corps |
| Garrison: | Tateyama, Chiba |
| Battles: | none |
| Notable Commanders: | Shihei Ooba Toyoaki Yamauchi |
The was an army of the Imperial Japanese Army during the final days of World War II.
The Japanese Army of Tokyo Bay was formed 19 June 1945, under the 12th area army as part of the last desperate defense effort by the Empire of Japan to deter possible landings of Allied forces in Kantō region. The Army of Tokyo Bay was based in Tateyama, Chiba. It consisted mostly of poorly trained reservists, conscripted students and Volunteer Fighting Corps home guard militia. It was demobilized at the surrender of Japan on August 15, 1945, without having seen combat.