Dagang District () was a former district of Tianjin, located at the city's southeast. It had a population of 440,000 and occupied in size, with a coast line stretching approximately on the eastern side.
Established in 1979, Dagang has developed a foundation of petroleum chemistry and hosts Dagang Oilfield within its border. In November 2009 Binhai New Area was consolidated into a district, and the former subordinate districts of Tanggu, Hangu and Dagang were abolished.