Ōtaki is a village located in Nagano Prefecture, Japan. As of 1 April 2019, the village had an estimated population of 753 in 378 household, and a population density of 2.4 persons per km2. The total area of the village is 310.82 square kilometres. At present, Ōtaki's land area is 95% forestland; 86% of which is designated national forest.