| Irisuna-jima | |
| Map: | Japan |
| Native Name: | 入砂島 |
| Native Name Link: | Japanese language |
| Location: | Tonaki, Okinawa Prefecture |
| Area Km2: | 0.26 |
| Elevation M: | 32 |
| Country: | Japan |
| Population: | uninhabited |
, also known as, is an uninhabited island in Tonaki, Okinawa Prefecture, Japan. It lies approximately four kilometres to the west of, the northwest tip of Tonaki Island. Ceramics, including kamui ware and celadons, are evidence of human activity on the island over the longue durée. Public access is now prohibited since, under the designation FAC (Facilities Admin Code) 6078, is a live-fire training area for the United States Forces Japan.[1] [2] [3]