| Sister Islands | |
| Map: | India Andaman and Nicobar Islands |
| Coordinates: | 11.145°N 92.725°W |
| Location: | Bay of Bengal |
| Archipelago: | Andaman Islands |
| Waterbody: | Indian Ocean |
| Total Islands: | 2 |
| Area Km2: | 0.49 |
| Area Footnotes: | [1] |
| Elevation M: | 76 |
| Highest Mount: | East Sister |
| Country: |  India |
| Country Admin Divisions Title: | District |
| Country Admin Divisions: | South Andaman |
| Country Admin Divisions Title 1: | Island group |
| Country Admin Divisions 1: | Andaman Islands |
| Country Admin Divisions Title 2: | Island sub-group |
| Country Admin Divisions 2: | Rutland Archipelago |
| Country Admin Divisions Title 3: | Tehsil |
| Country Admin Divisions 3: | Port Blair Tehsil |
| Population: | 0 |
| Population As Of: | 2011 |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
| Postal Code: | 744202[2] |
| Area Code Type: | Telephone code |
| Area Code: | 031927 [3] |
| Iso Code Type: | ISO code |
| Iso Code: | IN-AN-00[4] |
Sister Islands are a group of uninhabited islands of the Andaman Islands. They belong to the South Andaman administrative district, part of the Indian union territory of Andaman and Nicobar Islands.[5] These islands are 57km (35miles) south from Port Blair.
Before the British established a colony on the Andaman, the Sister islands were visited occasionally by the Onge people of Little Andaman Island for fishing. They may have been a waystation for their temporary settlement of Rutland Island between 1890 and 1930.[6]
The islands have been a wildlife refuge since 1987, with 0.36 km2.[7]
The islands belong to the Rutland Archipelago and are located south of Passage Island (Andaman).The islands are located at the northern side of the Duncan Passage,[8] about 6 km southeast of Passage Island and 18 km north of North Brother.The group consists of:
The islands are 220 m apart, connected by a coral reef. They are covered by forests and have rocky shores except for a beach on the NW side of East Sister. East Sister Island is 76m high and West Sister Island is 70.7m high.
Politically, Sister Islands are part of Port Blair Taluk.[9]