Dar es Salaam Region (Mkoa wa Dar es Salaam in Swahili) is one of Tanzania’s 31 administrative regions and is located in the east coast of the country. The region covers an area of 1,393 km2 (538 sq mi).

The region is comparable in size to the combined land and water areas of the nation state of Mauritius Dar es Salaam Region is bordered to the east by Indian Ocean and it is entirely surrounded by Pwani Region.

The Pwani districts that border Dar es Salaam region are Bagamoyo District to the north, Kibaha Urban District to the west, Kisarawe District to the south west and Mkuranga District to the south of the region. The region’s seat (capital) is located inside the ward of Ilala. The region is named after the city of Dar es Salaam itself. The region is home to Tanzania’s major finance, administration and industries, thus the making it the country’s richest region.

The region also has the second highest Human Development Index in the country after Mjini Magharibi. According to the 2022 census, the region has a total population of 5,383,728 and national census of 2012 had 4,364,541. The region has the highest population in Tanzania followed by Mwanza Region.