The following is the list of islands in the territory of Tanzania.^[1]

• Mara Region
  • Lukoba Island
  • Nafuba Island
  • Augusta Island
• Mwanza Region
  • Ukerewe Island
  • Ukara Island
  • Kome Island
  • Saanane Island
  • Miandere Islands
  • Ijinga Island
  • Vesi Archipelago
  • Anchor Island
  • Gabalema Island
  • Nyamatala Island
  • Juma Island
  • Chilandere Island
  • Bihiru Island
  • Ikuru Island
  • Maisome Island
  • Kamasi Island
  • Gana Island
  • Kweru Island
  • Irugwa Island
  • Kalazu Island
  • Leigoba Island
  • Buruza Island
• Geita Region
  • Rubondo Island
  • Mambe Island
  • Butwa Island
• Kagera Region
  • Msalala Island
  • Ikuza Island
  • Nazinga Island
  • Iroba Island
  • Bumbire Island
  • Bukarabe Island
  • Musila Island
  • Nabuyongo Island

• Kigoma Region
  • Karilami Island
  • Kalela Island or Magambo Island
• Rukwa Region
  • Manda Island
  • Kipili Archipelago
    • Kerenge Island
    • Lupita Island
    • Izinga Island
    • Mvuna Island
    • Mwila Island
    • Nkondwe Island
    • Kamamba Island
    • Kasisi Island
    • Ulilwe Island
  • Kala Island
  • Singa Island
  • Nausingili Island
  • Maleza Island
  • Mikongolo Island
  • Kalala Island
  • Kashia Island
  • Yamsamba Island
  • Lwilwi Island
  • Kasola Island
  • Kauchi Island
  • Kisi Island

• Ruvuma Region
  • Nyasa District
    • Mbamba Island
    • Lundo Island

• Tanga Region
  • Mkinga District
    • Ulenge Island
    • Mwewe Island
    • Kirui Island
  • Tanga District
    • Kwale Island
    • Tanga Island
    • Yambe Island
    • Karange Island
  • Pangani District
    • Maziwi Island
• Dar es Salaam Region
  • Kinondoni District
    • Mbudya Island
    • Bongoyo Island
    • Pangavini Island
    • Fungu Yasini Island
  • Kigamboni District
    • Sinda Island
    • Kendwa Island
    • Makatumbi Islands
    • Kimbubu Island
    • Latham Island
• Pwani Region
  • Bagamoyo District
    • Mapopo Island
  • Mafia District
    • Mafia Archipelago
      • Mafia Island
      • Jibondo Island
      • Juani Island
      • Chole Island
      • Bwejuu Island
      • Shungumbili Island
      • Barakuni Island
      • Miewi Island
      • Niororo Island
  • Mkuranga District
    • Kwale Island
    • Koma Island
    • Pemba Juu Island
    • Chokaa Islands
    • North Fanjove Island
• Lindi Region
  • Kilwa District
    • Songosongo Archipelago
      • Songo Songo Island
      • Okuza Island
      • Nyuni Island
      • Fanjove Island
    • Kilwa Kisiwani
    • Watiro Island
    • Sanje ya Kati Island
    • Songo Mnara Island
• Mtwara Region
  • Mtwara-Mikindani District
    • Mongo Island, also known of Membelwa
    • Nakitumbe Island
• Mjini Magharibi Region
  • Mjini District
    • Chumbe Island
    • Bawe Island
    • Changuu
    • Chapwani Island
    • Ukombe Island
    • Kwale Island, Zanzibar
    • Pamunda Island also known as Komunda Island
    • Sume Island
    • Miwi Island
    • Niamembe Island
    • Pungume Island
• Unguja North Region
  • Kaskazini A District
    • Zanzibar Archipelago
    • Tumbatu Island
    • Daloni Island
    • Popo Island
    • Mwana wa Mwana Island
• Unguja South Region
  • Kusini District
    • Uzi Island
    • Vundwe Island
    • Pengeleni Island
• Pemba North Region
  • Micheweni District
    • Mbali Island
  • Wete District
    • Njao Island
    • Fundo Island
    • Uvinje Island
    • Kokota Island
    • Funzi Island, Pemba
    • Pembe Island
    • Kojani Island
• Pemba South Region
  • Chake Chake District
    • Misali Island
  • Mkoani District
    • Makongwe Island
    • Kwata Island
    • Matumbwi Makubwa Island
    • Matumbini Island
    • Panza Island
    • Jombe Island also known as Yombi Island
    • Kiweni Island
    • Mtangani Island