The five biggest cities in Pakistan are:

Karachi: Karachi is the largest city in Pakistan and serves as its financial and commercial hub. It is located in the province of Sindh and is known for its vibrant culture, bustling markets, and diverse population.

Lahore: Lahore is the second-largest city in Pakistan and the capital of the province of Punjab. It is known for its rich history, architectural landmarks, and vibrant arts and cultural scene.

Faisalabad: Faisalabad, also known as the "Manchester of Pakistan," is the third-largest city in the country. It is an important industrial and manufacturing center, particularly known for its textile industry.

Rawalpindi: Rawalpindi is the fourth-largest city in Pakistan and is located in the province of Punjab. It is often referred to as the twin city of Islamabad, as it is situated right next to the country's capital.

Multan: Multan is the fifth-largest city in Pakistan and is located in the province of Punjab.