Hyderabad State () was a princely state in the Deccan region of south-central India with its capital at the city of Hyderabad. It is now divided into the present-day state of Telangana, the Kalyana-Karnataka region of Karnataka, and the Marathwada region of Maharashtra in India.
The state was ruled from 1724 to 1948 by the Nizam, who was initially a viceroy of the Mughal empire in the Deccan. Hyderabad gradually became the first princely state to come under British paramountcy signing a subsidiary alliance agreement. During the British rule in 1901, the state had a revenue of ₹4,17,00,000. The native inhabitants of Hyderabad State, regardless of ethnic origin, are called "Mulki" (countryman), a term still used today.