Bangaon (Bengali: বনগাঁ) is a city and a municipality in North 24 Parganas district in the state of West Bengal, India. Bangaon is headquarters of Bangaon subdivision.

Bangaon is located at 23°04′N 88°49′E / 23.07°N 88.82°E / 23.07; 88.82. It has an average elevation of 7 metres (22 feet). It is the last station on the Sealdah-Bangaon section of Eastern Railway, 77 km from Sealdah Station. It is part of the Kolkata Suburban Railway system. The Sealdah – Bangaon railway was built between 1882 and 1884.

Bangaon is near the border with Bangladesh. The railway route to East Bengal was established in 1884 and the Barisal Express operated passenger services till 1947. After the partition, a mixed service (passenger and goods) continued till the Indo-Pakistan war of 1965. With the creation of Bangladesh, the goods train service was reintroduced for two years from 1972 but again closed for lack of goods. India and Bangladesh signed an agreement in July last to re- establish the train link. This was in line with the initiatives of the previous BNP Government, which formed a committee in 1994 to assess the feasibility. Officials said the route would cut short 63 km compared to the Darshana-Gethe track to Dhaka and facilitate smooth traffic of 7 lakh metric tonnes of expected import-export items in a year. According to the agreement, goods train from both sides would be allowed at Benapole and Petrapole from where the Bangladesh Railway and the Indian Railway would take wagons of their counterparts to the destination.Petrapole Border is the most Profitable Border among the whole Indo-Bangladesh border. Most Business of Bangladesh come from this Border. This is Asia's largest land Port. And recently India Government has decided to transfer the port into a modern Port.