| XXI Corps Yirmi Birinci Kolordu | |
|---|---|
| Active | 1916– |
| Country | Ottoman Empire |
| Type | Corps |
| Patron | Sultans of the Ottoman Empire |
| Commanders | |
| Notable commanders | Miralay Nurettin Bey (October 1916-November 1918[1]) |
The XXI Corps of the Ottoman Empire (Turkish: 21 nci Kolordu or Yirmi Birinci Kolordu) was one of the corps of the Ottoman Army. It was formed during World War I.