Aoi Aso Shrine, National Treasure Shinto shrine in Hitoyoshi, Japan

Aoi Aso Shrine is a Shinto shrine in Hitoyoshi, Kumamoto Prefecture. Its five National Treasure buildings include a worship hall with a steep thatched roof and a two-storey gate with a thatched roof, red-painted brackets and a sacred rope above the entrance. Stone lanterns stand in front, and a camphor tree said to be the deities' first resting place grows on the grounds.

According to tradition, the shrine was founded on 9 September 806, when a priest of Aso Shrine enshrined a divided spirit of three Aso deities in Aoi-go, Kuma County. The Sagara clan rebuilt it in the mid-11th century and again in 1198, and in 1491 Sagara Tameshige had the shrine buildings constructed. The five National Treasure structures were built from 1610 to 1618 on the initiative of Hitoyoshi's first lord Sagara Nagamasa and his retainer Sagara Seibei.

Locals call the shrine Aoi-san. Its festival, Okunchi, runs from 3 to 11 October: a fire-quenching rite opens it, eight lions danced by 24 performers accompany the portable shrine through the streets on 9 October, and Kuma kagura, a nationally selected folk art, is offered for about three hours in the worship hall on the evening of 8 October.

The shrine is a four-minute walk, about 300 metres, from JR Kyushu's Hitoyoshi Station on the Hisatsu Line, and 2.3 km from the Hitoyoshi Interchange of the Kyushu Expressway. The Kuma River floodplain location means the grounds have repeatedly flooded, reaching 4.3 metres in the July 2020 downpours, when the worship hall took water above its floor and the Misogi Bridge lost part of its railing.

The 2008 National Treasure designation covered five structures at once: the main hall, corridor, offering hall, worship hall and tower gate. It was the first National Treasure designation for a thatched-roof shrine or temple building, and the first for any cultural property in Kumamoto Prefecture. The tower gate's upper corners hold paired male and female demon faces, a local detail called Hitoyoshi style.