Kanjizaiji (観自在寺) is a Shingon Buddhist temple in Ainan-cho (愛南町), Minamiuwa District, Ehime, Japan.
The history of the temple is said to date to the year 807 when Kūkai visited the town and made 3 venerable statues (尊像, sonzou) in honor of Emperor Heizei.
At that time he made the honzon of Yakushi Nyorai (本尊薬師如来), Wakihutsu Amida-Nyorai (脇仏阿弥陀如来) and Jūichimen Kanzenon (十一面観世音).
The small festival is called O-daishi-sama (御大師様) and it is held once around two months to celebrate the tie with Kūkai.
Kanjizaiji has also statues of the twelve Zodiac signs (干支, Eto), and they're called Hattaihutsu-Jūnishi-Honzon (八体仏十二支本尊).