| Army Group Ostmark | |
|---|---|
| German: Heeresgruppe Ostmark | |
| Active | April 1945 – 8 May 1945 |
| Country |  Nazi Germany |
| Branch |  Heer ( Wehrmacht) |
| Type | Army group |
| Size | ~450,000 (1 May 1945)[1]: 368 |
| Commanders | |
| Only commander | Lothar Rendulic |
Army Group Ostmark (German: Heeresgruppe Ostmark) was an army group of Nazi Germany. It was formed near the end of World War II and active for just over a month, between 2 April and 8 May 1945. Its sole commander was Lothar Rendulic and its main area of operations was German-controlled Austria.