Kalaburagi district, formerly known as Gulbarga district, is one of the 31 districts of Karnataka state in southern India. Kalaburagi city is the administrative headquarters of the district. The district is the headquarters of Kalaburagi division.
This district is situated in north Karnataka between 76°.04' and 77°.42 east longitude, and 17°.12' and 17°.46' north latitude, covering an area of 10,951 km2. This district is bounded on the west by Bijapur district and Solapur district of Maharashtra state, on the north by Bidar district and Osmanabad district of Maharashtra state, on the south by Yadgir district, and on the east by Sangareddy and Vikarabad districts of Telangana state.
The name of the area in Kannada is Kala-buragi, meaning "stony land." In the 6th century CE, the district was under the control of the Chalukyas. The Rashtrakutas briefly conquered the area, but were driven out by the Chalukyas who ruled the area for the next two centuries. The Kalachuris then conquered the area and ruled it until 12th century, when they were driven out by the Yadavas. Afterwards it was ruled by the Kakatiyas, who ruled until 1324, when their kingdom fell to the Delhi Sultanate. The ambitions of the local governors led to the formation of the Bahmani sultanate, who made Kalaburagi their capital. The Bahmanis eventually fell and left in their place a patchwork of 5 Deccan Sultanates. Kalaburagi was ruled by the Bidar sultanate until its annexation by Bijapur in 1619. Soon the district would become part of the Mughal Empire, but the Asaf Jahi governors of the Deccan later broke away and formed their own Hyderabad State, and Kalaburagi was ruled by them. This state became a princely state of British India, until its annexation by India in 1948. Afterwards, Kalaburagi, along with Bidar and Raichur, became part of Karnataka and were known as the Kalyana-Karnataka region. Since this time, this region has continuously been lagging the rest of the state in social indicators and is considered the most backward region of Karnataka.