Hyderābād District (), is a district of Sindh, Pakistan. Before, it was an administrative division of the Sindh called the Hyderabad Division. However, reforms of 2000 the third tier of government. Its capital is the city of Hyderabad. The Kirthar National Park is in the Hyderabad district. According to the 1998 census of Pakistan, it had a population of 4,339,445 of which 50.07% were urban (lived in a city). This makes it the second-most urbanised district of Sindh.