Sanzen-in is a Tendai school monzeki temple in Ōhara, Kyoto, Japan. The Heian period triad of Amida Nyorai flanked by attendants is a National Treasure.
Sanzenin Temple is the main attraction of the rural town of Ohara, which is located about an hour north of central Kyoto. The approach from Ohara bus stop to Sanzenin is lined with shops and restaurants catering to temple visitors, and there are a number of smaller temples in the vicinity. Sanzenin Temple itself has large temple grounds and a variety of buildings, gardens and walking paths.