Bato is a third-class municipality in Camarines Sur with 33 barangays and a 2020 population of 52,155. It was established on February 15, 1753 and is situated along Lake Bato, one of the major freshwater lakes of Camarines Sur. Its economy is primarily based on agriculture and fishing, with rice, corn, coconut, and aquatic resources among its major products.
Lake Bato is particularly important to Bato's identity because it supports freshwater fisheries and biodiversity. The lake is also associated with the sinarapan, the world's smallest commercially harvested fish.