| Official Name: | Adamdighi |
| Native Name: | আদমদিঘী |
| Settlement Type: | Upazila |
| Coordinates: | 24.8167°N 91°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Bangladesh |
| Subdivision Type1: | Division |
| Subdivision Name1: | Rajshahi |
| Subdivision Type2: | District |
| Subdivision Name2: | Bogra |
| Area Total Km2: | 168.83 |
| Population Footnotes: | [1] |
| Population Total: | 206797 |
| Population As Of: | 2022 |
| Population Density Km2: | auto |
| Timezone: | BST |
| Utc Offset: | +6 |
| Postal Code Type: | Postal code |
| Postal Code: | 5890[2] |
Adamdighi Upazila (bn|আদমদিঘী উপজেলা) is an upazila of Bogra District in the Division of Rajshahi, Bangladesh.Adamdighi Thana was established in 1821 and was converted into an upazila in 1983. It is named after its administrative center, the town of Adamdighi. Local legend has it that its name came from a Muslim saint, Baba Adam, who visited and dug a dighi (tank) for water storage.[3]
Adamdighi Upazila has a total area of . It is the westernmost upazila of Bogra District. It borders Joypurhat District to the north, Dhupchanchia Upazila to the north and east, Kahaloo and Nandigram upazilas to the east, and Naogaon District to the south and west.
According to the 2011 Census of Bangladesh, Adamdighi Upazila had 49,600 households and a population of 195,186. 36,157 (18.52%) were under 10 years of age. Adamdighi had a literacy rate (age 7 and over) of 54.57%, compared to the national average of 51.8%, and a sex ratio of 1005 females per 1000 males. 39,946 (20.47%) lived in urban areas.[4] [5]
Adamdighi Upazila is divided into Santahar Municipality and six union parishads: Adamdighi Sadar, Chapapur, Chhatiangram, Kundugram, Nashratpur, and Santahar. The union parishads are subdivided into 100 mauzas and 179 villages.
Santahar Municipality is subdivided into 9 wards and 35 mahallas.[4]
Santahar railway station is a rail junction between the main line connecting Darshana and Chilahati and the branch line connecting Santahar and Kaunia. In July 2014 between 15 and 20 intercity and 7 mail trains a day departed from Santahar.
Rail station Chhatiangram is on the main line connecting Darshana and Chilahati. In July 2014 it was served by between 10 and 14 intercity and 4 mail trains a day.
Rail stations Adamdighi and Nashratpur are on the branch line connecting Santahar and Kaunia. In July 2014 they were served by six or eight intercity and six mail trains a day.[6]
See also: Education in Bangladesh. There are seven colleges in the upazila. Santahar Government College is the only public one. Private colleges include Adamdighi Rahim Uddin Degree College, Nasratpur Degree College, and Shahid Ahsanul Haque Degree College.[4]
The madrasa education system includes one fazil madrasa.[7]