| Official Name: | Gosairhat |
| Native Name: | গোসাইরহাট |
| Settlement Type: | Upazila |
| Coordinates: | 23.0833°N 116°W |
| Subdivision Type: | Country |
| Subdivision Type1: | Division |
| Subdivision Name1: | Dhaka |
| Subdivision Type2: | District |
| Subdivision Name2: | Shariatpur |
| Established Title: | Establishment |
| Established Date: | 1921 |
| Established Title2: | Granted Upazila status |
| Established Date2: | 1983 |
| Area Total Km2: | 196.72 |
| Population Total: | 157,665 |
| Population As Of: | 2011 census |
| Population Density Km2: | auto |
| Timezone: | BST |
| Utc Offset: | +6 |
| Timezone Dst: | BDST |
| Utc Offset Dst: | +7 |
| Postal Code Type: | Postal code |
| Postal Code: | 8050 |
| Area Code Type: | Calling Code |
| Area Code: | +88 (06024) |
Gosairhat (Bengali: গোসাইরহাট) is an upazila of Shariatpur District in the Division of Dhaka, in south central Bangladesh.
Gosairhat Upazila has a total area of . It is the southernmost upazila of Shariatpur District. Located on the western bank of the Meghna River, it borders Damudya and Bhedargan upazilas to the north, Haimchar Upazila of Chandpur District to the east, Muladi and Hizla upazilas of Barisal District to the south, and Kalkini Upazila of Madaripur District to the west.
The upazila headquarters is spread over the only two urban areas of the upazila, Dhipur and Daser Jangal mauzas. Together they have a total area of .[1]
According to the 2011 Bangladesh census, Gosairhat Upazila had 33,169 households and a population of 157,665. 45,485 (28.85%) were under 10 years of age. Gosairhat had a literacy rate (age 7 and over) of 42.1%, compared to the national average of 51.8%, and a sex ratio of 1072 females per 1000 males. 10,969 (6.96%) lived in urban areas.[2] [3]
The boundaries of the upazila were expanded in 2006 by the addition of Kuchaipatti Union, transferred from the adjacent Hizla Upazila of Barisal District. The transfer accounts for 21,313 of the growth in population from 2001. Without it the population increase from 2001 to 2011 would have been 10.5%.
Gosairhat, formed as a Thana in 1921, was turned into an upazila in1983.[4]
Gosairhat Upazila is divided into eight union parishads: Alawalpur, Goshairhat, Idilpur, Kodalpur, Kuchaipatti, Nager Para, Nalmuri, and Samantasar. The union parishads are subdivided into 84 mauzas and 221 villages.
In the 2009 upazila elections, Fazlur Rahman was elected Upazila Chairman, while Chowdhury Ahsan Siddiqui and Ferdousi Begum were elected vice chairmen.[5] The Upazila Nirbahi Officer (UNO), who administers the upazila for the central government, is MST Kamrunnahar.[6]
Parliamentary constituency Shariatpur-3 covers Damudya and Gosairhat upazilas, and the Bhedarganj Thana portion of Bhedarganj Upazila. Nahim Razzak of the Bangladesh Awami League was elected Member of Parliament in a 2012 by-election in which he was unopposed.[7] [8]