Jambai is a panchayat town situated in the Bhavani taluk of the Erode district in the Indian state of Tamil Nadu. It is located in the north-western part of the state on the banks of the Bhavani River.
The town covers an area of 24.29 km² (9.38 sq mi). According to the 2011 census, Jambai had a population of 16,522 individuals.