Pwani Region in the context of "Dar es Salaam Region"

Mafia Island or Chole Shamba (Kisiwa cha Mafia, in Swahili) is an island of The Mafia Archipelago located in Mafia District in the southern Pwani Region of Tanzania across the Mafia Channel. The island is the third largest in Tanzanian ocean territory, but is not administratively included within the semi-autonomous region of Zanzibar, which has been politically separate since 1890. Mafia Island forms the largest part of Mafia District, one of the six administrative districts in the Pwani Region. As the Mafia Archipelago's main island, it is sometimes called Chole Shamba, meaning Chole farmlands in Swahili. This is in opposition to the historic settlement of Chole Mjini (Chole town) on Chole Island inside Mafia Bay. The island's population is over 65,000. The economy is based on fishing, subsistence agriculture and the market in Kilindoni. The island attracts some tourists, mainly scuba divers, birdwatchers, game fishermen, and people seeking relaxation.

Kilwa District (Wilaya ya Kilwa in Swahili) is one of six administrative districts of Lindi Region in Tanzania. The District covers an area of 15,000 km (5,800 sq mi). The district is comparable in size to the land area of the nation state of East Timor. Kilwa district is bordered to the north by Rufiji District in Pwani Region, to the east by the Indian Ocean, to the south by the Lindi District, Nachingwea District together with Ruangwa District, and to the west by the Liwale District. The district borders every other district in Lindi Region except Lindi Municipal District. The district seat (capital) is the town of Kilwa Masoko. The district is named after the medieval Swahili city state of Kilwa Kisiwani. In 1905, the Maji Maji Revolt began in Kilwa District of Lindi when the Matumbi first attacked the Akida seat in the Kibata ward, killing a German colonizer. According to the 2012 census, the district has a total population of 190,744. By 2022, the population had increased to 297,676.

Lindi Region (Mkoa wa Lindi in Swahili) is one of Tanzania's 31 administrative regions. The region covers an area of 66,040 km (25,500 sq mi). The region is comparable in size to the combined land area of the nation state of Sri Lanka. The regional capital is the municipality of Lindi.

The Lindi Region borders on Pwani Region, Morogoro Region, Ruvuma Region, and Mtwara Region. The name Lindi is an old Swahili word meaning "hiding pits", a place where Swahili people will hide to defend themselves from hostile invasions. The region is home to two UNESCO World Heritage Sites; namely, Kilwa Kisiwani and Selous Game Reserve. In 1905, the Maji Maji Revolt began in Kilwa District of Lindi when the Matumbi first attacked the Akida seat in the Kibata ward, killing a German colonizer. According to the 2012 national census, the region had a population of 864,652, which was lower than the pre-census projection of 960,236. For 2002–2012, the region's 0.9 percent average annual population growth rate was the 29th highest in the country. It was also the least densely populated region with 13 people per square kilometer.

The Mafia Archipelago or The Mafia Islands (Funguvisiwa vya Mafia, in Swahili) is a group of islands across the Mafia Channel in the Mafia District of Pwani Region's coast on the Sea of Zanj in Tanzania's Indian Ocean coast. The archipelago is composed of 9 islands and around 12 coral reefs. In total, the Mafia archipelago covers 972 km (375 sq mi) in total, of which 8.5 km (3.3 sq mi) 407 km2 are land and 565 km2 are water. and has an average elevation of 53 m (174 ft). Of the 12 reefs in the archipelago the most famous one is the Tutia Reef. The largest island in the archipelago is Mafia Island also known as Chole Shamba locally. The other eight islands inside Mafia District in addition to Mafia Island are; Juani Island, Chole Island, Jibondo Island (Kibondo), Bwejuu Island, Shungumbili Island (Thanda), Barakuni Island, Miewi Island, and Niororo Island (Nyororo).

Mafia District Council (Swahili: Wilaya ya Mafia) is one of eight administrative districts in the Pwani Region of Tanzania. It administers the main Mafia Island as well as the Mafia Archipelago. The district covers an area of 642.6 km (248.1 sq mi), and is surrounded by the Sea of Zanj. Rufiji District lies on the other side of the Mafia Channel to the west. The district is comparable in size to the land area of Saint Lucia.

The town of Kilindoni serves as its administrative capital. The district is home to the largest concentration of Whale Sharks in Africa, the Mafia Island Marine Park, the historic Chole Island Ruins, the Kisimani Mafia, the Kua Ruins, and the Mlola Forest Reserve. According to the 2012 Tanzania National Census, the population of the Mafia District was 46,438.

The Mafia Channel is a strait in the Pwani Region, Tanzania, Africa.

Kilindoni is the capital of Mafia District in Pwani Region, Tanzania. It is the largest settlement on Mafia Island.