Coordinates: 38°58′36″N 117°47′07″E / 38.97667°N 117.78528°E / 38.97667; 117.78528 The Port of Tianjin (Tianjin Gang, Chinese: 天津港; pinyin: tiānjīn gǎng),formerly known as the Port of Tanggu, is the largest port in Northern China and the main maritime gateway to Beijing. It is located on the western shore of the Bohai Bay, centered on the estuary of the Haihe River, 170 km south east of Beijing and 60 km east of Tianjin city. It is the largest man-made port in mainland China, and one of the largest in the world. It covers 107 square kilometers of land surface, with over 31.9 km of quay shoreline and 140 production berths at the end of 2010.

Tianjin Port handled 450 million tonnes of cargo and 11.5 million TEU of containers in 2011, making it the world's fifth largest port by throughput tonnage, and the eleventh in container throughput. The port trades with more than 600 ports in 180 countries and territories around the world. It is served by over 115 regular container lines. run by 60 liner companies, including all the top 20 liners. Capacity is increasing at a high rate, with 550-600 Mt of throughput capacity expected by 2015.

 Tianjin (help·info) (Chinese: 天津; pinyin: Tiānjīn; Mandarin pronunciation: [tʰjɛ́ntɕín]; Tianjinese: /tʰiɛn˨˩tɕin˨˩/~[tʰjɛ̃̀ɦɪ̀ŋ]; Postal map spelling: Tientsin) is a metropolis in northern China and one of the five national central cities of the People's Republic of China. It is governed as a direct-controlled municipality, one of four such designations, and is, thus, under direct administration of the central government. Tianjin borders Hebei Province and Beijing Municipality, bounded to the east by the Bohai Gulf portion of the Yellow Sea.

As a dual-core city, Tianjin is divided into the old city and the Binhai New Area. Binhai New Area is a new growth pole in China, and it maintains an annual growth rate of nearly 30% of the GDP. As of the end of 2010, 285 Fortune Global 500 companies have established branch offices in Binhai. It is a base of China's advanced industry, financial reform, and innovation.

In terms of urban population, it is the sixth-largest city of the People's Republic of China, and its urban land area (Binhai New Area is not included) ranks fifth in the nation after Beijing, Shanghai, Wuhan and Guangzhou. Tianjin's urban area is located along the Hai River, which connects to the Yellow and Yangtze Rivers via the Grand Canal in Tianjin. Tianjin was once home to foreign concessions in the late Qing Dynasty and early Kuomintang (KMT) era. The municipality incorporates the coastal region of Tanggu, home to the Binhai New Area and the Tianjin Economic-Technological Development Area (TEDA).