| name | geology | archipelago | Area (m²) | latitude (°) | Length (m) | waterbody | longitude (°) | population (people) | country | Map |
|---|---|---|---|---|---|---|---|---|---|---|
| Ritter Island | Volcanic | Siassi-Inseln | 300,000 | -5.5166668892 | 148.1166687012 | 0 | Papua New Guinea | Map | ||
| Sakar Island | Siassi-Inseln | 40,000,000 | -5.4000000954 | Mar de bismarck | 148.0833282471 | Papua New Guinea | Map | |||
| Umboi Island | Siassi-Inseln | 930,000,000 | -5.5333333015 | Mar de Salomón | 147.8666687012 | Papua New Guinea | Map |