Bang Mae Nang (, ) is one of the six subdistricts (tambon) of Bang Yai District, in Nonthaburi Province, Thailand. Neighbouring subdistricts are (from north clockwise) Bang Khu Rat, Bang Rak Phatthana, Sao Thong Hin, Bang Muang, Bang Yai, and Ban Mai. In 2020, it had a total population of 50,798 people.
The subdistrict is subdivided into 18 administrative villages (muban).
The area of the subdistrict is shared by two local administrative organizations.