Punjab, India
The word Doab is a combination of the Indo-Iranian words Doab (two) and āb (water), and thus the (land of) two rivers. The two rivers are the Beas and Sutlej. Sometimes, in English, there can be a definite article before the name i.e. the Doaba. The name is also sometimes spelled as Duoab or Douaab or Doaab.