Bundang-dong (Korean: 분당동) is one of the 19 dongs of Bundang District, Seongnam, South Korea.

The total area is 3.40 km², with a population of 31,186 (as of April 2007).

[1] It is a quiet residential area with trees and parks, located at the foot of Bulgok Mountain.

The famous St. John's Cathedral is near Yuldong Park.

The name 'Bundang-dong' comes from Bunjeom-ri and Dangwu-ri which used to be the Bundang-dong area.