Mjimwema is an administrative ward in the Kigamboni district of the Dar es Salaam Region of Tanzania. Tungi and the Indian Ocean border the ward on its northern side. East is Somangila. South of it, it is bordered by Kibada and Kisarawe II. By Vijibweni, the west. Mjimwema is named after Medieval Swahili settlement that was once located in the ward. According to the 2012 census, the ward has a total population of 27,789.

Kigamboni District, officially known as The Kigamboni Municipal Council is one of five districts of the Dar es Salaam Region of Tanzania. The district is bordered to the north by Ilala District, to the east by the Indian Ocean, the west by Temeke District, and to the south by the Mkuranga District of Pwani Region. It covers an area of 578.3 km2 (223.3 sq mi), making it the largest district the region by area. The district is comparable in size to the land area of Micronesia. The administrative seat is Somangila. The district is home to the headquarters of the Tanzanian Navy, The Kigamboni Naval Base. Also the district is home to the prestigious Mwalimu Nyerere Memorial Academy. In addition the district is one of two districts in Dar es Salaam that has a National Historic Site, with Kigamboni hosting the most, namely the Kimbiji Ruins, Mbutu Bandarini and Mbuamaji historic sites. The 2012 National Tanzania Census states the population for Kigamboni as 162,932.