Goma is the capital and largest city of the North Kivu Province in the eastern region of the Democratic Republic of the Congo (DRC). It is located on the northern shore of Lake Kivu, next to the Rwandan city of Gisenyi. It shares its borders with Bukumu Chiefdom to the north, Rwanda to the east, Masisi Territory to the west, and is flanked by Lake Kivu to the south. The city lies in the Albertine Rift, the western branch of the East African Rift System, and is only 13–18 km (8.1–11.2 mi) south of the active Nyiragongo Volcano. With an approximate area of 75.72 square kilometers, the city has an estimated population of nearly 2 million people according to the 2022 census, while the 1984 estimate placed the number at 80,000.

Lake Kivu is one of the African Great Lakes. It lies on the border between the Democratic Republic of the Congo and Rwanda, and is in the Albertine Rift, the western branch of the East African Rift. Lake Kivu empties into the Ruzizi River, which flows southwards into Lake Tanganyika. In 1894, German explorer and officer Gustav Adolf von Götzen was the first European to discover the lake.