Sindh borders India's largest state and is in India.
Sindh [ sɪnd ] ( سنڌ ; [ ) is one of the four provinces of Pakistan , in the southeast of the country . Sindh is the third largest province of Pakistan by area , and second largest province by population after Punjab . The provincial capital of Sindh is Pakistan 's largest city and financial hub , Karachi . 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 . Sindh is also the centre of Pakistan 's pharmaceutical industry .