Tōon is a city located in the Ehime Prefecture of Japan. It covers a total area of 211.30 square kilometers (81.58 sq mi) and has an estimated population density of 160 persons per km2.
As of September 1, 2022, the city had an estimated population of 33,276 residents living in 15,571 households. The name of the city can be romanized in several ways, including Toon, Tôon, Tōon, or Tohon.