Irabu Prefectural Natural Park (伊良部県立自然公園, Irabu kenritsu shizen kōen) is a Prefectural Natural Park on and around the islands of Irabu and Shimojishima, Okinawa Prefecture, Japan.

The islands, part of the Miyako island group, are adjacent but divided by a narrow channel.

The park was established in 1995 and includes a designated marine zone of 23 km2.

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