Longbang Port, Port of entry in Longbang, Guangxi, China.

Longbang Port is a land border crossing in Longbang town, Jingxi, Baise, Guangxi, about 30 m north of boundary marker No. 94 on the China-Vietnam line, facing Vietnam's Chaling Port in Cao Bang province. It operates on a "one port, two channels" model: a passenger channel designed for one million people a year and the Naxi cargo channel, opened in December 2023, built for five million tonnes a year.

Longbang had a border liaison office, the duixun, under the Qing dynasty during the Guangxu reign. The modern port opened to Vietnam as a Class II crossing in August 1996, was upgraded to Class I in January 2003 and passed inspection in October 2007. On 28 December 2023 it opened as the China–Vietnam Longbang–Chaling international port.

The border area has hosted a "duixun" (border liaison office) since the Guangxu era of the Qing dynasty, handling diplomatic and security affairs. Today the port operates on a "one port, two channels" model, with a passenger channel and the Naxi cargo channel, whose four functional zones include a border-residents' mutual market opened in October 2017.

Longbang Port operates on a "one port, two channels" model: the passenger channel is designed for one million people a year, while the Naxi cargo channel, opened in December 2023, is built for five million tonnes of goods annually. The crossing lies about 30 metres north of boundary marker No. 94, 42 km from Jingxi and 5 km from Vietnam's Chaling border gate. National Highway 212 ends here, and the Jingxi–Longbang expressway, opened in December 2018, links the port to the Guangxi motorway network.

Longbang Port operates on a "one port, two channels" model: the passenger channel is designed for one million people a year, while the Naxi cargo channel, opened in December 2023, is built for five million tonnes of goods annually. The cargo channel covers about 230,000 square metres and includes a border-residents' market area that began operating in October 2017.