thumb|Location of Arida District in Wakayama Prefecture
is a district located in Wakayama Prefecture, Japan.
As of September 1, 2008, the district has an estimated population of 50,095 and a density of 114 persons/km<sup>2</sup>. The total area is 438 km<sup>2</sup>.
Towns and villages
- Aridagawa
- Hirogawa
- Yuasa
Neighbouring Regions
- Yoshino district, Nara Prefecture, Japan
- Arida City, Wakayama Prefecture, Japan
- Hidaka District, Wakayama Prefecture, Japan
- Tanabe City, Wakayama Prefecture, Japan
- Ito District, Wakayama Prefecture, Japan
- Kainan City, Wakayama Prefecture, Japan
- Kaisō District, Wakayama Prefecture, Japan
Merger
- On 1 January 2006 - the towns of Kanaya, Kibi and Shimizu merged to form the new town of Aridagawa.