Sindh (/sɪnd/; Sindhi: سنڌ ; Urdu: سِندھ ) is one of the four provinces of Pakistan, in the southeast of the country, and the historical home of the Sindhi people. Sindh is the third largest province of Pakistan by area, and second largest province by population after Punjab. Sindh is bordered by Balochistan province to the west, and Punjab province to the north. Sindh also borders the Indian states of Gujarat and Rajasthan to the east, and Arabian Sea to the south. Sindh's landscape consists mostly of alluvial plains flanking the Indus River, the Thar desert in the eastern portion of the province closest to the border with India, and the Kirthar Mountains in the western part of Sindh.
Sindh has Pakistan's second largest economy, while its provincial capital Karachi is Pakistan's largest city and financial hub, and hosts the headquarters of several multinational banks. Sindh is home to a large portion of Pakistan's industrial sector and contains two of Pakistan's commercial seaports, Port Bin Qasim and the Karachi Port. The remainder of Sindh has an agriculture based economy, and produces fruit, food consumer items, and vegetables for the consumption other parts of the country.
Sindh is known for its distinct culture which is strongly influenced by Sufism, an important marker of Sindhi identity for both Hindus (Sindh has Pakistan's highest percentage of Hindu residents) and Muslims in the province. Several important Sufi shrines are located throughout the province which attract millions of annual devotees.
Sindh's capital, Karachi, is Pakistan's most ethnically diverse city, with Muhajirs, or descendants of those who migrated to Pakistan from India after 1947 and throughout the 1950s and 1960s, making up the majority of the population. Karachi and other urban centres of Sindh have seen ethnic tensions between the native Sindhis and the Muhajirs boil over into violence on several occasions. Sindh is home to two UNESCO World Heritage Sites – the Historical Monuments at Makli, and the Archaeological Ruins at Moenjodaro.