Nanto (南砺市 Nanto-shi) is a city located in Toyama Prefecture, Japan.
As of May 31, 2011, the city has an estimated population of 55,315, with 17,386 households and a population density of 82.70 persons per km². The total area is 668.86 km².
The modern city of Nanto was established on November 1, 2004, from the merger of the towns of Fukuno, Inami and Jōhana, the villages of Inokuchi, Kamitaira, Taira and Toga (all from Higashitonami District), and the town of Fukumitsu (from Nishitonami District).
The city takes its name from its relative location to the neighboring city Tonami, the south—"nan" (南) in Japanese—and the first syllable of the neighboring city's name—"to" (砺).
Geographically, the city contains numerous rivers, valleys, mountains and lakes, as well as abundant level ground for rice paddies.
The 2013 Anime True Tours Nanto was set in Nanto and shows scenes from Nanto and the surrounding area.