The Hathamati River is a river of western India, in Gujarat, whose origin is in the Aravali Range hills. It is one of the left-bank tributaries of the Sabarmati River. The Hathmati river system includes the Hathamati Dam near Himatnagar. The Guhai River is a tributary of the Hathmati River.

Bhiloda and Himatnagar are the main towns on the banks of this river.

In fiscal year 1899-1900, a channel was cut from the Hathmati Canal to the Khari River to capture rainy season overflow for irrigation from the Khari Cut.