The Rechna Doab, or Rachna Doab (in Pakistan), can be classified as one of the main regions of Punjab

Punjab region

The Punjab , also spelled Panjab |water]]s"), is a geographical region straddling the border between Pakistan and India which includes Punjab province in Pakistan and the states of the Punjab, Haryana, Himachal Pradesh, Chandigarh and some northern parts of the National Capital Territory of Delhi...

. Punjab historically has been divided into regions based on its various rivers, since the name Punjab is based on its 5 main rivers. The rechna may include the area between the Chenab and Ravi

Ravi River

The Ravi is a trans-boundary river flowing through Northwestern India and eastern Pakistan. It is one of the six rivers of the Indus System in Punjab region ....

 rivers, going all the way up to Mirpur

Mirpur District

Mirpur District is a district in the disputed and divided state of [Jammu and Kashmir]. The district is named after the main city, Mirpur. The District of Mirpur has a population of 371,000 and covers an area of . The district is mainly mountainous with some plains...

 and Jammu

Jammu

Jammu , also known as Duggar, is one of the three administrative divisions within Jammu and Kashmir, the northernmost state in India.Jammu city is the largest city in Jammu and the winter capital of Jammu and Kashmir...

, that is the southern fringes of the Kashmir valley. It lies between 30° 35' and 32° 50' N. and 71° 50' and 75° 3'E., the name was formed by the Mughal emperor Akbar, by
combining the first syllables of the names of the two rivers. Rechnavi

Rachnavi

Rachnavi or Jhangochi dialect is spoken in Pakistani Punjab. Rachnavi or Jhangochi is the oldest and most idiosyncratic dialect of the Punjabi. It is spoken throughout a widespread area, starting from Khanewal and Jhang at both ends of Ravi and Chenab to Gujranwala district. It then runs down to...

is the main dialect of Punjabi widely spoken in Rechna Doaba