Mavelikara is a taluk and municipality in the Onattukara region of Alappuzha district in the Indian state of Kerala. Located in the southern part of the district on the banks of the Achankovil River.

Odanad was a feudal state in late medieval Kerala. It was established in the 11th century, and disestablished in 1746 when it became part of Travancore after Venad King Marthanda Varma's northern expedition. The last king of Odanad was King Kotha Varma. At the time of its dissolution, it was composed of the present-day taluks of Mavelikkara, Karthikapally, Chenganur in the Alappuzha district and Karunagapally in the Kollam district. In the 15th century, the capital of Odanad was moved from Kandiyoor-Muttom, Mavelikkara to Eruva and Krishnapuram, near Kayamkulam, which led to the state being called Kayamkulam. After this shift, Kayamkulam became the commercial centre of Odanad, while Mavelikkara remained its cultural centre. Odanad was controlled by Nair lords, among whom the ruler of Kayamkulam was the most prominent.