Rachna Doab (Punjabi: رچنا دوآب), also spelt as Rachena Doab, can be classified as one of the main regions of Punjab, Pakistan. Punjab historically has been divided into regions based on its various rivers, since the name Punjab is based on its five main rivers. Rachna Doab is a Doab or tract of land in the Punjab region, encompassing all the area lying between the Ravi and Chenab Rivers, all the way from the Jammu Division till their confluence south of the town of Ahmadpur Sial in Punjab, Pakistan. It lies between 30° 35' and 32° 50' N. and 71° 50' and 75° 3' E. The name was given by the Mughal emperor Akbar, by combining the first syllables of the names of the two rivers. This is the most densely-populated region in Punjab, Pakistan, home to large cities such as Lahore and Gujranwala.