was a town located in Ochi District, Ehime Prefecture, Japan.
As of 2003, the town had an estimated population of 4,558 and a density of 164.43 persons per km<sup>2</sup>. The total area was 27.72 km<sup>2</sup>.
On January 16, 2005, Yoshiumi, along with the towns of Hakata, Kamiura, Kikuma, Miyakubo, Namikata, Ã Âmishima, Ã Ânishi and Tamagawa, and the villages of Asakura and Sekizen (all from Ochi District), was merged into the expanded city of Imabari and no longer exists as an independent municipality.