Aichi Prefecture is a prefecture of Japan located in of the Chubu region. The region of Aichi is also known as the the Tokai region. The capital is Nagoya. It is the focus of the Chukyo Metropolitan Area.
Originally, the region was divided into the two provinces of Owari and Mikawa. After the Meiji Restoration, Owari and Mikawa were united into a single entity. In 1871, after the abolition of the han system, Owari, with the exception of the Chita Peninsula, was established as Nagoya Prefecture, while Mikawa combined with the Chita Peninsula and formed Nukata Prefecture. Nagoya Prefecture was renamed to Aichi Prefecture in April 1872, and was united with Nukata Prefecture on November 27 of the same year.
The government of Aichi Prefecture is located in the Aichi Prefectural Government Office in Nagoya, which is the old capital of Owari.
The Expo 2005 World Exposition was held in Seto and Nagakute.