Mangan-ji, Buddhist temple in Azumino, Japan

Mangan-ji is a Shingon sect Buzan-ha temple in Azumino, Nagano Prefecture, with the mountain name Kurio-san. It enshrines a Thousand-Hand Kanzeon and is the 26th stop on the Shinano Thirty-Three Kannon Pilgrimage, also called "Shinano Kōya." Its grounds hold a roofed wooden bridge, the Kyōbashi, and a Jizō hall with some 500 statues.

According to temple tradition, Mangan-ji was founded during the Jinki era (around 725), when a 5 cm Buddha image emerged from a pond and a hall was built to house it. A document records that Minamoto no Yoshinaka donated mountain forest land around 1181. After the fall of the Nishina clan, the temple was moved to its present site around 1582 during repairs by Ogasawara Sadayoshi, lord of Matsumoto Castle, and later came under the protection of Matsumoto Domain. It was abolished in 1870 under the anti-Buddhist haibutsu kishaku policy and restored in 1876.

The temple is the 26th stop on the Shinshū Thirty-Three Kannon Pilgrimage and is also called "Shinshū Kōya." Near the entrance, a roofed wooden bridge called "Okyō-bashi" has sutras written on the underside of its planks; crossing it is said to require reciting a sutra. Beside the bridge stands a Jizō hall with around 500 Jizō statues, and the temple's "Meisui" spring water is known as one of Azumino's famous waters.

Access is from JR Akashina Station on the Shinonoi Line or Hotaka Station on the Oito Line: take the bus bound for Maki for 40 minutes to the terminus, then walk about 40 minutes. The temple grounds sit at an elevation of around 900 m, so allow time for the climb. The approach begins at the wooden roofed bridge called Okyo-bashi, which must be crossed on foot.

The temple is also called "Shinano Koya", and its precinct spring, known as "Azumino's famous water", rises at an elevation of 900 m. Near the entrance, a 10 m long, 2.5 m wide roofed wooden bridge called Okyo-bashi has sutras written on the underside of its planks; visitors are said to have to chant a sutra while crossing it.