Punjab (pʌnˈdʒɑːb,_-ˈdʒæb,_ˈpʊn-; ਪੰਜਾਬ; ; pə̞ɲˈdʒäːb; also romanised as Panjāb or Panj-Āb) is a geopolitical, cultural, and historical region in South Asia. It is specifically located in the northern part of the Indian subcontinent, comprising areas of modern-day eastern-Pakistan and northwestern-India. Punjab's major cities are Lahore, Faisalabad, Rawalpindi, Gujranwala, Multan, Ludhiana, Amritsar, Sialkot, Chandigarh, Shimla, Jalandhar, Gurugram, and Bahawalpur.
Punjab grew out of the settlements along the five rivers, which served as an important route to the Near East as early as the ancient Indus Valley civilization, dating back to , and had numerous migrations by the Indo-Aryan peoples. Agriculture has been the major economic feature of the Punjab and has therefore formed the foundation of Punjabi culture, with one's social status being determined by land ownership. The Punjab emerged as an important agricultural region, especially following the Green Revolution during the mid-1960s to the mid-1970s, and has been described as the "breadbasket of both India and Pakistan."
Punjab's history is a tapestry of conflict, marked by the rise of indigenous dynasties and empires. Following Alexander the Great's invasion in the 4th century BCE, Chandragupta Maurya allied with Punjabi republics to establish the Maurya Empire. Successive reigns of the Indo-Greek Kingdom, Kushan Empire, and Indo-Scythians followed, but were ultimately defeated by Eastern Punjab Janapadas such as the Yaudheya, Trigarta Kingdom, Audumbaras, Arjunayanas, and Kuninda Kingdom. In the 5th and 6th centuries CE, Punjab faced devastating Hunnic invasions, yet the Vardhana dynasty emerged triumphant, ruling over Northern India. The 8th century CE witnessed the Hindu Shahis rise, known for defeating the Saffarid dynasty and the Samanid Empire. Concurrently, the Tomara dynasty and Katoch Dynasty controlled eastern Punjab, resisting Ghaznavid invasions. Islam took hold in Western Punjab under Ghaznavid rule.