This study investigates an account on the diversity and abundance of benthic infauna of Chettuva mangrove in Kerala. Marine benthic infaunal species are an important factor in marine ecosystems and play a chief ecological function in the mangrove ecosystem. This research article gives an overview of infaunal diversity associated with eight sites of Chettuva mangrove. The present study revealed that infaunal species are significantly moderate within this mangrove ecosystem.