Bang Na is one of the fifty districts (khet) of Bangkok, Thailand. Its neighbors, clockwise from the north, are the Phra Khanong and Prawet Districts of Bangkok and Bang Phli, Mueang Samut Prakan, and Phra Pradaeng Districts of Samut Prakan province.

The Bang Na Expressway, officially Burapha Withi Expressway, is a 55-kilometer-long (34 mi) six-lane elevated highway in Thailand. It is a toll road running above National Highway 34 and is owned by the Expressway Authority of Thailand (EXAT).