Datong District or Tatung is a district of Taipei City, Taiwan. It is located between the Taipei Metro Red Line and eastern shore of the Tamsui River, and between Civic Boulevard and the Sun Yat-sen Freeway. The southern part of this area used to be the site of Twatutia, one of the first settlements in what is now Taipei and for a time the area's commercial center. Taipei's commercial center has since shifted south east to Zhongzheng, Da'an and Xinyi, and Datong is far less important economically. One of the last vestiges of Twatutia's commercial importance disappeared with the closing of the Chien-Cheng Circle in 2006. The north was the site of the village of Daronpon.

Taipei, officially Taipei City, is the capital and a special municipality of Taiwan. Located in Northern Taiwan, Taipei City is an enclave of the municipality of New Taipei City that sits about 25 km (16 mi) southwest of the northern port city of Keelung. Most of the city rests on the Taipei Basin, an ancient lakebed. The basin is bounded by the relatively narrow valleys of the Keelung and Xindian rivers, which join to form the Tamsui River along the city's western border.