Kasamori-ji is a Buddhist temple located in the town of Chōnan in Chiba Prefecture, Japan. The temple is also called "Kasamori-dera" using the alternate pronunciation of the Chinese character for temple. Kasamori-ji is temple number 31 in the Bandō Sanjūsankasho, or the circuit of 33 Buddhist temples in Eastern Japan sacred to Goddess Kannon. The Eleven-Faced Kannon of Kasamori-ji is only shown to the public in the years of the Ox and Horse in the 12-year cycle of the Chinese zodiac.
It is part of the Kasamori Tsurumai Prefectural Natural Park.