Mayurbhanj district (Odia: ମୟୁରଭଂଜ ଜିଲ୍ଲା) is one of the 30 districts in Odisha state in eastern India. it is full autonomus district under fifth schedule of constitution of india It is the largest district of Odisha by area. Baripada city is its headquarters. As of 2011[update], it is the third-most-populous district of Odisha (out of 30), after Ganjam and Cuttack.
Mayurbhanj is land-locked with a geographical area of 10,418 km2 (4,022 sq mi) and is in the northern boundary of the state. It is bounded in the northeast by Midnapure district of West Bengal, Singhbhum district of Jharkhand in the northwest, Baleshwar district in the southeast and by Kendujhar in the southwest. More than 39% of total geographical area (4,049 km2 (1,563 sq mi)) is covered with forest and hills. The district comprises four sub-divisions with 26 blocks with 382 Gram Panchayats and 3945 villages and it is the largest district of Odisha.