|Location||Danube, Chilia branch|
|Area||25 km2 (9.7 sq mi)|
The island has a surface area of 2,500 ha or 25 km2 or 9.7 sq mi and is of high importance to the local agriculture, its soil having a yearly output of up to 5 tons of wheat or 10 tons of corn per hectare. The island is home to the eponymous Ostrovu Tătaru village, within the Chilia Veche commune. Starting 2015, a Norwegian-funded minimum security prison functions on the island.
The island was part of Romania until the start of the Second World War. In the fall of 1940, the Romanian Danube islands of Tătaru Mare, Dalerul Mic, Dalerul Mare, Maican and Limba were occupied by the Soviet Union. All of the five islands were re-occupied by Axis-aligned Romania in July 1941 (Operation München), only to be lost again in 1944 after King Michael's Coup. In early 1948, the Soviet Union agreed to return Tătaru Mare Island back to Romanian rule, the only one of the five Danube islands ultimately recovered by Romania.
- IUCN East European Programme, 1992, Conservation Status of the Danube Delta, p. 32
- Inchisoarea unde detinutii invata o meserie sub cerul liber, inaugurata in Delta. A fost finantata de guvernul Norvegiei (in Romanian)
- Romanian Cultural Foundation, 1996, Romanian Civilization, Volume 5, p. 13
- Grigore Stamate, Editura Militară, 1997, Frontiera de stat a României, p. 79 (in Romanian)