Chizen-in, Buddhist temple in Nagahama, Japan.

Chizen-in is a Buddhist temple in Nagahama featuring traditional Japanese buildings with curved roofs and richly decorated wooden structures throughout the complex. The temple grounds contain various spaces dedicated to practice, study, and reflection.

Chizen-in's founding date is unknown; it originally stood at Odani Castle's town in Ibe, Kohoku, before Toyotomi Hideyoshi moved it to its present site as guardian temple of Nagahama Castle, on the castle's demon gate side. In 1576 it received 60 koku as Buddhist offering for the young Toyotomi Hidekatsu. Under the Edo-period patronage of castle lord Naitō Nobunari, it prospered.

The temple belongs to the Tendai Shinsei school and is a branch temple of Saikyo-ji in Sakamoto, Otsu. It enshrines a wooden statue of Toyotomi Hideyoshi said to be carved by Sōri Shinzaemon, carried out of Osaka Castle when it fell. In the hall is a Jizo with one swollen eye, revered as a substitute for people with eye diseases.

Chizen-in is about a 15-minute walk from JR Nagahama Station on the Biwako Line. It is open from 9:00 to 16:00 and has no closing days. Admission is 300 yen, or 250 yen for groups of 30 or more.

In the main hall stands a wooden statue of Toyotomi Hideyoshi, said to have been carried out of Osaka Castle when it fell and attributed to the sculptor Sōri Shinzaemon; it was secretly venerated even in the Edo period. In a hall on the grounds sits a Jizō with one swollen eye, called on as a substitute for people with eye disease, present and future.