Derai and Jagannathpur upazilas on the north, Habiganj Sadar and Bahubal upazilas on the south, Sreemangal, Maulvi Bazar Sadar and Balaganj upazilas on the east, Baniachang upazila on the west.

Nabiganj thana was established in 1839 and was turned into an upazila in 1983. It consists of one municipality, 13 union parishads, 218 mouzas and 359 villages.

Nabiganj Upazila is located in Habiganj District. Upazilla(s)/Thana(s) in Habiganj are Ajmiriganj Upazila, Baniachang Upazila, Bahubal Upazila, Chunarughat Upazila, Habiganj Sadar Upazila, Lakhai Upazila, Madhabpur Upazila, Nabiganj Upazila.