Doaba (Punjabi: ਦੋਆਬਾ), also known as Bist Doab or Jullundur Doab, is the region of Punjab, India between the Beas and Sutlej rivers, one of the five Punjab doabs. People of this region are given the demonym "Doabia". The dialect of Punjabi spoken in Doaba is called "Doabi". The term "Doaba" or "Doab" is derived from Persian "دو آب" (do āb "two water") meaning "land of two rivers".
Scheduled castes form more than 35% of the population in Doaba. This area is also called the NRI Hub of Punjab as a consequence of the migration of a significant percentage of Doabias.
Doaba comprises the following districts:
Traditionally, Doaba was subdivided into Manjki, Dona, Dhak, Sirowal, Kandi and Bet areas. The boundaries between Dona, Manjki and Dhak are not well defined and this article gives an outline of the areas which fall within the sub divisions of Doaba. For instance, the division between Manjki and Dhak is the Grand Trunk Road. Even though the Manj held land to the east of this road (around Bara Pind), people generally refer to this area as Dhak for ease of reference.