Ayathil is a neighbourhood in Vadakkevila zone of Kollam city, Kerala, India. It is the 36th ward in Kollam Municipal Corporation. It is one of the cashew processing hubs in Kollam city. Kerala State Cashew Development Corporation Limited has a factory there. Kollam Bypass passes through Ayathil.

Kollam Municipal Corporation (KMC) is an ISO 9001:2015 certified civic body that governs the city of Kollam in the Indian state of Kerala. It is the fourth-largest city corporation by population in the state, and the fifth-largest by area. Constituted in 1903 it was officially recognized as a city corporation in 2000. The body governs an area of 73.03 square kilometres (28.20 sq mi) centered at Kollam, with about 55 divisions and a population of 397,419.