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.