thumb|Location of Hidaka District in Wakayama Prefecture
is a district located in Wakayama Prefecture, Japan.
As of 2020, the district has an estimated Population of 48,661 and a Density of 74.25 persons/km<sup>2</sup>. Hidaka's total area is 655.49 km<sup>2</sup>.
Towns and villages
- Hidaka
- Hidakagawa
- Inami
- Mihama
- Minabe
- Yura
Merger
- On October 1, 2004, the village of Minabegawa merged into the expanded town of Minabe.
- On May 1, 2005, the towns of Kawabe, Nakatsu and Miyama merged to form the new town of Hidakagawa.
- On May 1, 2005, the village of Ryūjin merged into the city of Tanabe.