thumb|right|300px|Viewing Jianguomen Bridge (flyover) from the Beijing Ancient Observatory

Jianguomen () was a gate in the city wall that once stood in Beijing and is now a transportation hub to the east of city centre. At Jianguomen bridge, the eastern 2nd Ring Road divides Jianguomen Inner Street to the west from Jianguomen Outer Street to the east.

A sub-district, Jianguomen Subdistrict is named after the gate. It is part of the Dongcheng district.

History

Jianguomen was not one of the 16 original gates in Beijing's 15th century Ming-era city wall. The gate was an opening on the east side of Beijing's inner city wall that was created in 1939 during the Japanese occupation of the city to enable access to the industrializing eastern suburbs of the city.