Naoiri (直入町 Naoiri-machi) was a town located in Naoiri District, Ōita, Japan.
On April 1, 2005 Naoiri, along with the towns of Kujū and Ogi, all from Naoiri District, was merged into the expanded city of Taketa.
As of 2003, the town had an estimated population of 2,816 and the density of 33.59 persons per km². The total area was 83.83 km².