Yūsui (湧水町, Yūsui-chō) is a town located in Aira District, Kagoshima Prefecture, Japan.

The villages of Kurino and Yoshimatsu were established on May 1, 1889 with the creation of the modern municipalities system.

Yūsui has a mayor-council form of government with a directly elected mayor and a unicameral town council of 12 members.

Yūsui, collectively with the city of Kirishima, contributes four members to the Kagoshima Prefectural Assembly.

In terms of national politics, the town is part of the Kagoshima 3rd district of the lower house of the Diet of Japan.