Ryūzō-ji Temple, Buddhist temple in Maebashi, Japan

Ryūzō-ji Temple is a Tendai Buddhist temple in Maebashi whose entrance is a red-painted wooden gate with a grey tiled roof and two flanking walls bearing dark plaques with vertical characters. White metal fences line the approach, and two white stone lanterns stand beyond the gate. The temple is also known as Aoyagi Daishi.

The temple was established in 783 by the monk Shodo and later rebuilt following a major fire in 1746. The reconstruction received support through land grants from the regional domain lord Sakai Tadayasu.

The temple belongs to the Tendai school (Tendaishū) and carries the mountain name Seiryūsan and the cloister name Dangidōin. Its main image is Amida Nyorai, and it enshrines a statue of Gensan Daishi, which is why it is also called Aoyagi Daishi. Its festivals are the great rite on 3 January and the Setsubun-e on 3 February.

The temple stands in Maebashi, Gunma Prefecture. Its gate opens onto a path flanked by two white metal fences, with two white stone lanterns just beyond the gate. The main annual rite is the great festival on 3 January, and a setsu-bun ceremony is held on 3 February.

The temple enshrines a statue of Gensai Daishi, known locally as Aoyagi Daishi, after the temple's Aoyagi-san mountain name. The Tendai temple on Mount Seiryu also carries the name Dangido-in, and its main image is Amida Nyorai.