Toyonaka (豊中町; -cho) was a town located in the former Mitoyo District, Kagawa, Japan.
On January 1, 2006 Toyonaka was merged with the towns of Mino, Nio, Saita, Takase, Takuma and Yamamoto, all from Mitoyo District, to form the new city of Mitoyo and no longer exists as an independent municipality.
As of 2003, the town had an estimated population of 11,684 and a density of 586.84 persons per km². The total area was 19.91 km2 (8 sq mi).