| Unit Name: | Japanese Twelfth Army |
| Dates: | November 7, 1938 - August 15, 1945 |
| Country: | Empire of Japan |
| Branch: | Imperial Japanese Army |
| Type: | Infantry |
| Role: | Corps |
| Garrison: | Zhengzhou |
| Nickname: | Jin ("Benevolence") |
The was an army of the Imperial Japanese Army during the Second Sino-Japanese War.
The Japanese 12th Army was formed on November 7, 1938 under the North China Area Army as a garrison force for the occupation the provinces North China. It served primary as a training and reserve unit, and participated in counter-insurgency operations.
The 59th division famous for its wartime atrocities was attached to the Twelfth Army from February 1942 till May 1945.
The 12th Army was demobilized at Zhengzhou, Henan Province on the surrender of Japan.
| Name | From | To | |
| 1 | 9 November 1938 | 12 September 1939 | |
| 2 | 12 September 1939 | 1 March 1941 | |
| 3 | 1 March 1941 | 1 March 1943 | |
| 4 | 1 March 1943 | 7 February 1944 | |
| 5 | 5 February 1944 | 7 April 1945 | |
| 6 | 7 April 1945 | 15 August 1945 | |
| Name | From | To | |
| 1 | 9 November 1938 | 1 December 1939 | |
| 2 | 1 December 1939 | 2 December 1940 | |
| 3 | 2 December 1940 | 15 October 1941 | |
| 4 | 15 October 1941 | 10 December 1942 | |
| 5 | 10 December 1942 | 16 October 1944 | |
| 6 | 16 October 1944 | 1 September 1945 | |