Sơn Động district is a rural district (Vietnamese: huyện) located in the northeastern part of Bắc Giang Province, Vietnam. It is situated approximately 90 kilometers east of Bắc Giang city, the provincial capital. The district covers a significant area, largely characterized by its mountainous and forested terrain, making it one of the more remote districts of Bắc Giang. Its eastern border abuts Quảng Ninh Province, and it shares borders with several other districts within Bắc Giang.
Administratively, Sơn Động district is subdivided into one township (An Châu, its district capital) and numerous communes (xã). The population is predominantly rural, with a mix of ethnic groups, including the Kinh (Viet), Tày, Nùng, and Dao, contributing to a diverse cultural landscape.
The economy of Sơn Động is primarily agricultural and forestry-based. Key agricultural products include rice, tea, and various fruits. Forestry plays a significant role due to the extensive forest cover, providing timber and non-timber forest products. Historically, the area has also been known for some mineral resources, including coal and gold. The district faces challenges common to mountainous and remote regions, such as infrastructure development and economic diversification, but also possesses natural beauty and potential for eco-tourism. Its landscape includes parts of the Tây Yên Tử Nature Reserve, known for its biodiversity and historical significance related to the Yên Tử Buddhist complex.