Ōkubo-ji (大窪寺) is a Shingon temple in Sanuki, Kagawa Prefecture, Japan. It is Temple 88 on the Shikoku 88 temple pilgrimage. Pilgrims leave their kongō-zue at the temple when completing the circuit. The Ōkubo-ji temple bell and pilgrim bells have been selected by the Ministry of the Environment as one of the 100 Soundscapes of Japan.

The temple's grounds feature a repository for walking sticks dedicated by pilgrims, symbolizing the completion of their spiritual journey. These sticks are ritually disposed of by burning them every spring and summer. Additionally, the temple offers a unique experience through a miniature pilgrimage under the Daishi Hall, where visitors can step on bags of sand representing the 88 temples, receiving the same blessings as if they visited each one.

Okuboji is situated about 450 meters above sea level and is known for its beautiful autumn foliage, making it a popular spot for visitors in November. The temple is accessible by a 60-minute bus ride from JR Shido Station, with operating hours for the Temple Stamp Office from 7:00 a.m. to 5:00 p.m.

The temple's location, history, and role in the Shikoku Pilgrimage underscore its cultural and spiritual significance, offering insights into Japanese Buddhism and providing a serene environment for reflection and exploration.

• Shikoku 88 temple pilgrimage
• 100 Soundscapes of Japan

34°11′29″N 134°12′24.2″E / 34.19139°N 134.206722°E / 34.19139; 134.206722