Dowarabazar (Bengali: দোয়ারাবাজার, is an upazila of Sunamganj District in the Division of Sylhet, Bangladesh.

It has 42,693 households and total area 263.35 km2 and bounded by the Indian state of Meghalaya and border on the north, and Chhatak Upazila on the south and east, Sunamganj Sadar Upazila on the west.

According to the 2011 Census of Bangladesh, Dowarabazar Upazila had 42,693 households and a population of 228,460.

Dowarabazar had a literacy rate (age 7 and over) of 30.38%, compared to the national average of 51.8%, and a sex ratio of 1035 females per 1000 males.

[5][6] Dowarabazar Upazila is divided into nine union parishads: Bangla Bazar, Bouglabazar, Dohalia, Dowarabazar, Laxmipur, Mannargaon, Norsingpur, Pandargaon, and Surma.