Hangu is a city in the Khyber Pakhtunkhwa province of Pakistan. It is the largest city and namesake of Hangu District and is the third-largest ci…Hangu is a city in the Khyber Pakhtunkhwa province of Pakistan. It is the largest city and namesake of Hangu District and is the third-largest city in Kohat Division, after Karak and Kohat. In 1998, Hangu was the second-largest city in the division. Hangu is the 27th largest city in the province of Khyber Pakhtunkhwa. The principal language of the city is Pashto.