Jà Âyà  (, , ) is a city located in Kyoto Prefecture, Kansai, Japan. , the city has an estimated population of 72,869 in 30720 households and a population density of 2200 persons per km<sup>2</sup>. The total area of the city is .
Jà Âyà  is located in southeastern Kyoto Prefecture. It is halfway between Kyoto and Nara. It is located in the southeastern part of the Kyoto Basin, with the Kizugawa River to the west and hills to the east. The Aoya River flows from east to west in the southern part of the city. The terrain is generally flat in the west, and becomes more undulating towards the east.
Jà Âyà  has a humid subtropical climate (Köppen Cfa) characterized by warm summers and cool winters with light to no snowfall. The average annual temperature in Jà Âyà  is 13.6 ðC. The average annual rainfall is 1356 mm with September as the wettest month. The temperatures are highest on average in August, at around 26.3 ðC, and lowest in January, at around 2.8 ðC.
Per Japanese census data, the population of Jà Âyà  has declined in recent decades.
The area of Jà Âyà  was part of ancient Yamashiro Province. The villages of Kutsukawa, Tominosho and Terada in Kuse District, Kyoto and the village of Aodani in Tsuzuki District, Kyoto were established on April 1, 1889 with the creation of the modern municipalities system. These villages merged on April 1, 1951 to form the town of Jà Âyà Â, which was elevated to city status on May 3, 1972.
Jà Âyà  has a mayor-council form of government with a directly elected mayor and a unicameral city council of 20 members. Jà Âyà  contributes two members to the Kyoto Prefectural Assembly. In terms of national politics, the city is part of the Kyoto 6th district of the lower house of the Diet of Japan.
Jà Âyà  has a mixed economy based on commerce, agriculture and light manufacturing.
Gold and silver threads weaved into Kimono and Obi are produced at Joyo. Joyo produces 60% of all the gold and silver thread in Japan.
Jà Âyà  has ten public elementary schools and five public junior high schools operated by city government and two public high schools operated by the Kyoto Prefectural Board of Education. The prefecture also operates one special education school for the handicapped.
Jà Âyà  has two sister cities: