Sai Noi subdistrict, Nonthaburi

Sai Noi (ไทรน้อย, ) is one of the seven subdistricts (tambon) of Sai Noi District, in Nonthaburi Province, Thailand. Neighbouring subdistricts are (clockwise from north) Khlong Khwang, Lahan, Bang Bua Thong, Thawi Watthana and Khun Si. In 2020 it had a total population of 29,256 people.

Central administration
The subdistrict is subdivided into 11 administrative villages (muban).

Local administration
The area of the subdistrict is shared by two local administrative organizations.
 * Sai Noi Subdistrict Municipality (เทศบาลตำบลไทรน้อย)
 * Sai Noi Subdistrict Administrative Organization (องค์การบริหารส่วนตำบลไทรน้อย)