Ban Mai (, ) is one of the twelve subdistricts (tambon) of Pak Kret District, in Nonthaburi Province, Thailand. Neighbouring subdistricts are (from north clockwise) Bang Khayaeng, Ban Mai (Pathum Thani Province), Si Kan, Don Mueang, Thung Song Hong, Khlong Kluea and Bang Phut. In 2020, it had a total population of 33,642 people.
The subdistrict is subdivided into 6 villages (muban).
The whole area of the subdistrict is covered by Pak Kret City Municipality ().