Tenryū-ku (天竜区) is one of the three wards of the city of Hamamatsu, Shizuoka Prefecture, Japan. It is bordered by Kita-ku and Hamakita-ku in Hamamatsu, the cities of Shimada and Iwata and towns of Mori and Kawanehon in Shizuoka, Shishiro, Tōei and Toyone in Aichi Prefecture and Iida and Tenryū in Nagano Prefecture.

Tōei is a town located in Kitashitara District, Aichi Prefecture, Japan. As of 1 October 2019, the town had an estimated population of 3,033 in 1438 households, and a population density of 24.6 persons per km2. The total area of the town was 123.38 square kilometres (47.64 sq mi).