Tadotsu (多度津町, Tadotsu-chō) is a town located in Nakatado District, Kagawa Prefecture, Japan. As of 1 October 2022[update], the town had an estimated population of 22,124 in 10365 households and a population density of 270 persons per km2. The total area of the town is 24.39 square kilometres (9.42 sq mi).