Mwanza Region is one of Tanzania's 31 administrative regions. The regional capital is Mwanza.
The neighbouring regions are Geita to the west, Shinyanga to the south, and Simiyu to the east. Furthermore, Lake Victoria borders the region's north frontier.
The regional commissioner of the Mwanza Region is John Mongella.
The region is administratively divided into seven districts:
According to the 2012 national census, the Mwanza Region had a population of 2,772,509, which was lower than the pre-census projection of 3,771,067. For 2002-2012, the region's 3.0 percent average annual population growth rate was the eighth highest in the country. It was also the sixth most densely populated region with 293 people per square kilometer.
As of 2007, the region covered an area of 20,095 square kilometres (7,759 sq mi) of dry land; however, parts of the region went to establish the Geita Region in 2012.
The Mwanza Region is occupied by Four tribes include the Wasukuma, the Wakerewe, Wakara and Wazinza. Mwanza city's Makongoro Road is named after a prominent Sukuma chief who controlled the area in the late 1800s. Under British rule, the region was one district in the Lake Province, which became the Lake Region after independence. In 1963, the Mwanza Region was created.
Wasukuma tribe is the major tribe occupying the Mwanza Region, the other region that is occupied by Wasukuma is Shinyanga Region,Geita Region and Simiyu region
Mwanza region is well connected by road, rail, water and air transport.
Paved trunk road T4 from Musoma to Bukoba passes through the district from east to west. While paved trunk road T8 from Mwanza to Shinyanga passes through the region from north to south.
The Mwanza branch of the Central Line railway passes through the region on its way from Mwanza to Tabora and there are several stations within the region's borders.
Ferries connect Ukerewe Island with Mwanza city. Other ferries operate between Mwanza and Sengerema District.
Mwanza Airport is located within the region's boundaries, in the city of Mwanza.