| Boomer Island | |
| Local Name: | --> |
| Nickname: | --> |
| Map Width: | 280 |
| Pushpin Map: | Australia Tasmania |
| Pushpin Relief: | 1 |
| Pushpin Map Caption: | Location in Tasmania |
| Waterbody: | Boomer Bay, Blackman Bay, Tasman Sea |
| Area M2: | or |
| Area Ha: | --> |
| Length M: | --> |
| Width M: | --> |
| Coastline M: | --> |
| Country: | Australia |
| Country Admin Divisions: | Tasmania |
| Country Admin Divisions Title 1: | Region |
| Country Admin Divisions 1: | South East |
| Country Area M2: | or |
| Country Area Ha: | --> |
| Country 1 Area M2: | or |
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| Timezone1: | AEST |
| Utc Offset1: | +10 |
| Timezone1 Dst: | AEDT |
| Utc Offset1 Dst: | +11 |
Boomer Island is a tied island in the south east region of Tasmania, Australia. It is known for a large castle built upon it and is owned by Gunter Jaeger, a businessman.
The landmass is Crown land from the high-water mark to 30 metres inland. The landlocked parcel of land within this crown land is privately owned.
An artificial tombolo connects the landmass to the mainland in Boomer Bay, which itself lies within Blackman Bay.
The island can be seen in several public photographs.