Thawi Watthana (Thai: ทวีวัฒนา, pronounced [tʰā.wīː wát.tʰā.nāː]) is one of the seven subdistricts (tambon) of Sai Noi District, in Nonthaburi Province, Thailand.

The subdistrict is bounded by (clockwise from north) Khun Si, Sai Noi, Phimon Rat, Bang Khu Rat, Nong Phrao Ngai and Naraphirom subdistricts.

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

[2] The whole area of the subdistrict is covered by Thawi Watthana Subdistrict Administrative Organization (องค์การบริหารส่วนตำบลทวีวัฒนา).

This Nonthaburi Province location article is a stub.