Tanzania borders eight countries: Kenya, Uganda, Rwanda, Burundi, the Democratic Republic of the Congo, Zambia, Malawi, and Mozambique. Together these frontiers run for roughly 4,161 km, making Tanzania one of the most connected nations in East and Southern Africa. Its borders sweep from the Indian Ocean coast inland across three of Africa's Great Lakes, touching countries that span four distinct regions of the continent.
The Eight Countries That Border Tanzania
Tanzania sits at a geographic crossroads, linking East Africa to Central and Southern Africa. Listed clockwise from the north, its neighbors are:
- Kenya (about 769 km) — to the north and northeast, Tanzania's longest land border.
- Uganda (about 391 km) — to the northwest, much of it across Lake Victoria.
- Rwanda (about 222 km) — to the northwest, along the Kagera River.
- Burundi (about 589 km) — to the west, near Lake Tanganyika.
- Democratic Republic of the Congo (about 479 km) — to the west, across Lake Tanganyika.
- Zambia (about 338 km) — to the southwest.
- Malawi (about 475 km) — to the south, along Lake Nyasa and the Songwe River.
- Mozambique (about 756 km) — to the south, along the Ruvuma River.
No other East African country touches so many neighbors. For a fuller picture of the country itself, see our tanzania country guide.
The Northern Neighbors: Kenya, Uganda and Rwanda
Kenya forms Tanzania's most significant border, stretching roughly 769 km from Lake Victoria in the west to the Indian Ocean. Mount Kilimanjaro rises on the Tanzanian side just south of this line, and the world-famous Serengeti-Mara ecosystem straddles the frontier. Each year more than a million wildebeest cross between Tanzania's Serengeti and Kenya's Maasai Mara in the largest land migration on Earth. The Maasai people live on both sides, and Nairobi and Dar es Salaam are tied together by busy road and air links.
Uganda lies to the northwest, sharing about 391 km of frontier that runs largely through Lake Victoria, Africa's largest lake. The Tanzanian port city of Mwanza anchors trade and fishing on the southern shore. Rwanda, also to the northwest, shares around 222 km, much of it traced by the Kagera River. The crossing at Rusumo Falls is a key transit point, and all three of these northern partners belong with Tanzania to the East African Community.
The Western Lakeshore: Burundi and DR Congo
To the west, Tanzania's borders are defined by water and by some of the continent's most remote terrain. Burundi shares roughly 589 km, with the boundary following the Malagarasi River and skirting Lake Tanganyika. The Kigoma region serves as the main Tanzanian hub here, a relatively sparsely populated zone that has long hosted Burundian refugees.
The Democratic Republic of the Congo lies across Lake Tanganyika, the world's second-deepest and longest freshwater lake at about 673 km long. The 479 km border is almost entirely water. Kigoma faces the Congolese shore, and it was nearby at Ujiji that explorer Henry Morton Stanley is said to have greeted David Livingstone in 1871. The lake teems with hundreds of endemic cichlid fish species, making cross-border conservation a shared responsibility.
The Southern Frontiers: Zambia, Malawi and Mozambique
Zambia shares about 338 km in the southwest, with Lake Tanganyika forming the northern stretch. The TAZARA railway, built with Chinese assistance in the 1970s, runs from Dar es Salaam to Zambia's Copperbelt, giving landlocked Zambia vital access to the sea. The Tunduma-Nakonde crossing is one of the busiest commercial gateways in the region.
Malawi sits to the south across roughly 475 km. Tanzania calls the lake here Lake Nyasa, Malawi calls it Lake Malawi, and the precise water boundary remains a matter of quiet diplomatic disagreement; the Songwe River marks the land portion. Mozambique completes the circle to the south with about 756 km of border defined almost entirely by the Ruvuma River. This biodiverse region pairs Tanzania's Nyerere National Park (formerly the Selous Game Reserve) with Mozambique's Niassa Reserve to form one of Africa's largest protected areas. The Unity Bridge over the Ruvuma, opened in 2010, greatly improved cross-border travel.
Why Tanzania's Borders Matter
Three of Africa's Great Lakes — Victoria, Tanganyika and Nyasa/Malawi — define long sections of Tanzania's boundaries, shaping trade, fishing, and shared ecosystems with multiple neighbors at once. Membership in the East African Community alongside Kenya, Uganda, Rwanda, Burundi and DR Congo encourages the free movement of goods and people, while railways and bridges give landlocked partners a path to the Indian Ocean. These connections make Tanzania a hub for regional commerce, tourism, and conservation.
Frequently Asked Questions
How many countries border Tanzania?
Tanzania borders eight countries: Kenya, Uganda, Rwanda, Burundi, the Democratic Republic of the Congo, Zambia, Malawi, and Mozambique.
Which country shares the longest border with Tanzania?
Kenya shares the longest border with Tanzania, running about 769 km from Lake Victoria to the Indian Ocean. Mozambique is a close second at roughly 756 km.
Which Tanzanian neighbors lie across lakes rather than land?
The Democratic Republic of the Congo lies across Lake Tanganyika, while much of the Uganda border runs through Lake Victoria and parts of the Malawi border follow Lake Nyasa. These lake boundaries make water a defining feature of Tanzania's frontiers.
Is Tanzania part of a regional bloc with its neighbors?
Yes. Tanzania is a member of the East African Community along with Kenya, Uganda, Rwanda, Burundi, and the Democratic Republic of the Congo, which promotes trade and easier cross-border movement among members.
