Yazu (八頭町, Yazu-chō) is a town located in Yazu District, Tottori Prefecture, Japan. As of October 1, 2015, the town has a population of 16,985 and a density of 82.05 per square kilometre (212.5/sq mi). The total area is 206.71 square kilometres (79.81 sq mi).
Yazu is located to the far east of Tottori Prefecture. Its highest peak is Ōginosen (1,309.9 metres or 4,298 feet), which is located on the border of the city of Tottori, the towns of Misasa and Chizu, as well as Shin’onsen in Hyōgo Prefecture. Ōginosen is part of the Daisen Volcanic Belt. The mountain is part of Hyōnosen-Ushiroyama-Nagisan Quasi-National Park, and has facilities for skiing and camping. The Hattō River (39.1 metres (128 ft)), the largest tributary of the Sendai River, flows through Yazu, as does a smaller tributary, the Kisaichi River (28.1 metres (92 ft)), which traces its origin to Ōginosen.
Hyōnosen-Ushiroyama-Nagisan Quasi-National Park, founded on April 10, 1969, spans across Hyōgo Prefecture, Tottori Prefecture, and Okayama Prefecture. Much of the area of the town of Yazu is included in the quasi-national park.
Per Japanese census data, the population of Yazu in recent years is as follows: