Hongū (本宮町 Hongū-chō) was a town located in Higashimuro District, Wakayama, Japan.
On May 1, 2005 Hongū, along with the village of Ryūjin, from Hidaka District, the town of Nakahechi, and the village of Ōtō, both from Nishimuro District, was merged into the expanded city of Tanabe.
As of 2003, the town had an estimated population of 3,759 and a density of 18.42 persons per km². The total area was 204.06 km².