Rat Niyom (Thai: ราษฎร์นิยม, pronounced [râːt ní(ʔ).jōm]) is one of the seven subdistricts (tambon) of Sai Noi District, in Nonthaburi Province, Thailand.

The subdistrict is bounded by (clockwise from north) Sam Mueang, Bo Ngoen, Namai, Lahan, Khlong Khwang, Khun Si and Sai Yai subdistricts.

[2] The subdistrict is subdivided into 8 administrative villages (muban).

[1][3] The whole area of the subdistrict is covered by Rat Niyom Subdistrict Administrative Organization (องค์การบริหารส่วนตำบลราษฎร์นิยม).

This Nonthaburi Province location article is a stub.