| Unit Name: | Japanese Fifty-Second Army |
| Dates: | April 7, 1945 – August 15, 1945 |
| Country: | Empire of Japan |
| Branch: | Imperial Japanese Army |
| Type: | Infantry |
| Role: | Corps |
| Garrison: | Sakura, Chiba |
| Battles: | Operation Downfall |
The was an army of the Imperial Japanese Army during the final days of World War II.
The Japanese 52nd Army was formed on April 7, 1945, under the Japanese 12th Area Army as part of the last desperate defense effort by the Empire of Japan to deter possible landings of Allied forces in central Honshū during Operation Downfall. The Japanese 52nd Army was based in Sakura, Chiba Prefecture and was thus intended to guard the closest beachhead to Tokyo and the Kantō region along the Bōsō Peninsula. 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.
| Name | From | To | |
| 7 April 1945 | 15 August 1945 | ||
| Chief of Staff | Major General Tamaki Onwa | 6 April 1945 | 10 October 1945 |