Kaminaka (上那賀町; -cho) was a town located in Naka District, Tokushima, Japan.
On March 1, 2005 Kaminaka was merged with the towns of Aioi and Wajiki, and the villages of Kisawa and Kito, all from Naka District, to form the new city of Naka.
As of 2003, the town had an estimated population of 2,242 and a density of 12.79 persons per km². The total area was 175.27 km².