|Subdivisions||Districts: 6, Municipalities: 30|
|• Governor||Yoshinobu Nisaka|
|• Total||4,724.69 km2 (1,824.21 sq mi)|
(October 1, 2017)
|• Density||199.87/km2 (517.7/sq mi)|
|ISO 3166 code||JP-30|
Wakayama Prefecture ( 和歌山 県, Wakayama-ken) is a prefecture of Japan located in the Kansai region of Honshu.  Wakayama Prefecture has a population of 944,320 (1 October 2017) and has a geographic area of 4,724 km2 (1,824 sq mi). Wakayama Prefecture borders Osaka Prefecture to the north, and Mie Prefecture and Nara Prefecture to the northeast.
Wakayama is the capital and largest city of Wakayama Prefecture, with other major cities including Tanabe, Hashimoto, and Kinokawa.  Wakayama Prefecture is located on the western coast of the Kii Peninsula on the Kii Channel, connecting the Pacific Ocean and Seto Inland Sea, across from Tokushima Prefecture on the island of Shikoku.
On July 17–18, 1953, a torrential heavy rain occurred, followed by collapse of levees, river flooding and landslides in a wide area. Many bridges and houses were destroyed. According to an officially confirmed report by the Government of Japan, 1,015 people died, with 5,709 injured and 7,115 houses lost.[ citation needed]
Nine cities are in Wakayama Prefecture:
These are the towns and villages in each district:
Since 1996, population of Wakayama Prefecture has kept declining, and since 2010, it has been the only prefecture in Kansai region with population below 1,000,000. In 2017, Wakayama is ranked 40th by population in Japan with a population of 944,320.
Mount Kōya (高野山, Kōya-san) in the Ito District is the headquarters of the Shingon sect of Japanese Buddhism. It is home to one of the first Japanese style Buddhist temples in Japan and remains a pilgrimage site and an increasingly popular tourist destination as people flock to see its ancient temples set amidst the towering cedar trees at the top of the mountain. The Sacred sites and pilgrimage routes in the Kii Mountain Range extend for miles throughout the prefecture and together have been recognized as Japan's 11th UNESCO World Heritage site. 
Wakayama Prefecture ranks first in the production of oranges in Japan. Wakayama has its own brand of oranges, which is produced in Arida District and called 'Arida-Orange'. Arida District, where oranges have been produced for more than 400 years,  yields about half of the orange crops in Wakayama today.  Furthermore, the yield of Arida-Oranges accounts for about 10 percent of Japanese domestic production of oranges. 
According to the survey by the Ministry of Agriculture, Forestry and Fisheries of Japan, Wakayama stands first in the production of Japanese apricots (梅, Ume) in Japan. As of 2016, Wakayama made up about 70 percent of Japanese domestic production of Japanese apricots. 
Wakayama Prefecture has friendship and sister relationships with six places outside Japan:  Richmond, Canada; Shandong, People's Republic of China; Pyrénées-Orientales, France; Florida, United States; Sinaloa, Mexico; and Galicia, Spain.
- JR West
- JR Central
- Kishu Railway
- Wakayama Electric Railway
- Hanwa Expressway
- Keinawa Expressway
- Yuasa Gobo Road
- Nachi Katsuura Road
- Route 24
- Route 26
- Route 42
- Route 168 (Shingu- Gojo- Ikoma- Hirakata)
- Route 169 (Shingu- Kumano-Kawakami-Yoshino- Asuka- Kashihara- Nara)
- Route 311 (Kamitonda-Tanabe-Shingu-kumano- Owase)
- Route 370 (Kainan-Hashimoto-Gojo- Uda-Nara)
- Route 371 ( Kawachinagano-Hashimoto-Koya-Kushimoto)
- Route 424
- Wakayama- Tokushima
- Nussbaum, Louis-Frédéric. (2005). "Wakayama prefecture" in Japan Encyclopedia, p. 1026, p. 1026, at Google Books; "Kansai" in p. 477, p. 477, at Google Books.
- Nussbaum, "Wakayama" in p. 1025, p. 1025, at Google Books.
- Nussbaum, "Provinces and prefectures" in p. 780, p. 780, at Google Books.
- 今月の旬 Wakayama Prefecture website, accessed May 31, 2017
- 農林水産 特産品 Wakayama Prefecture website, accessed May 31, 2017
- 有田みかんについて JA Arida website, accessed May 31, 2017
- 作況調査（果樹）： 農林水産省 The Ministry of Agriculture, Forestry and Fisheries website, accessed June 1, 2017
- 友好・姉妹提携 Archived 2011-06-11 at the Wayback Machine Wakayama Prefecture website, retrieved May 16, 2008
- Nussbaum, Louis-Frédéric and Käthe Roth. (2005). Japan encyclopedia. Cambridge: Harvard University Press. ISBN 978-0-674-01753-5; OCLC 58053128
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