Flags of Cameroon

Republic of Cameroon (unitary state)

Who & why: a 1972 referendum abolishes the federal structure, renaming the country the United Republic of Cameroon under President Ahmadou Ahidjo; it is renamed again, simply the Republic of Cameroon, in 1984 under Paul Biya, who has governed continuously since 1982. The move from federal to unitary government is itself contested by many Anglophone Cameroonians, and tension over the country's English-speaking regions' autonomy continues into the present day.

What it represents: the green-red-yellow vertical tricolor keeps its pan-African colors, but the two stars of the federal era are replaced in 1975 by a single central gold star symbolizing national unity rather than the federation's two constituent states.

Federal Republic of Cameroon

Who & why: a February 1961 United Nations plebiscite splits British Cameroons: the southern zone votes to join independent French Cameroun, while British Northern Cameroons votes to join Nigeria instead. On 1 October 1961, Southern Cameroons formally joins to form the Federal Republic of Cameroon, with East Cameroon (the former French territory) and West Cameroon (the former Southern British Cameroons) as its two federated states — the direct origin of the country's Anglophone-Francophone divide that persists today.

What it represents: the green-red-yellow tricolor with two gold stars in the upper half of the green band, representing East and West Cameroon, the two components of the federation formed when the British Southern Cameroons joined (Wikipedia; Flags of the World also dates the two stars to 1961).

Republic of Cameroon (French trusteeship & independence)

Who & why: French Cameroun adopts self-government within the French Union in 1957 and this flag with it; full independence follows on 1 January 1960 under President Ahmadou Ahidjo, making it one of the earliest sub-Saharan African states to become independent. The republic's leadership immediately begins working toward reunification with the neighboring British-administered territory.

What it represents: the vertical green-red-yellow tricolor, adopted in 1957 (Wikipedia: Law No. 46 of 26 October; Flags of the World: law 57/46 of 29 October). Wikipedia calls the colours pan-African and says Cameroon was the second state to adopt them; the sources read do not tie them to Ethiopian independence, and Flags of the World does not say whether the 1957 flag had a star.

French Cameroun & British Cameroons (split mandate/trusteeship)

Who & why: Anglo-French forces conquer German Kamerun during the First World War, and by 1916 the territory is split between France (roughly the larger eastern and central portion, French Cameroun) and Britain (two narrow western strips, administered as British Cameroons alongside neighboring Nigeria). Both become League of Nations mandates in 1922 and United Nations trust territories after 1946, but under entirely separate administrations, laws, and languages — the direct origin of Cameroon's modern Anglophone-Francophone divide.

What it represents: Wikipedia's page shows a French Cameroon flag (1916-1960) and a British Cameroons flag (1922-1961) without describing their designs; Flags of the World describes neither. The sources read do not confirm that the French Tricolor or the Union Jack was flown, or the claim that no unified flag existed.

German Kamerun

Who & why: German trader Gustav Nachtigal signs treaties with Duala chiefs in July 1884, establishing the protectorate of Kamerun. German rule is marked by harsh forced-labor concession policies in the interior before the colony is lost during the First World War, occupied by invading Anglo-French forces by 1916 and formally stripped from Germany at Versailles in 1919.

What it represents: Wikipedia's page shows a German Colonial Office flag and a proposed German Cameroon flag that was never adopted, without describing them; Flags of the World says German colonies used Imperial German arms and flags rather than their own, that the 1914 colonial flag designs (for Kamerun, an elephant's head) were never introduced because of the war, and names the colony 1884 to February 1916. The sources read therefore do not support a black-white-red colonial ensign with a Kamerun badge having been flown; they support imperial German flags only.

Bamum, Duala, and other pre-colonial kingdoms

Who & why: the territory that becomes Cameroon holds many independent polities before European contact, most notably the Bamum Kingdom in the western grassfields (founded around 1394, and still existing today as a traditional monarchy with its own written script, invented by Sultan Njoya around 1896) and the Duala chiefdoms of the coast, who become key trading intermediaries with Portuguese, and later German, merchants from the 15th century onward.

What it represents: no single flag unified this diverse pre-colonial landscape; the Bamum Kingdom itself used royal regalia and, from Njoya's reign, its own script and symbols, but no securely documented national-level flag survives for the region as a whole. Shown here honestly blank rather than invented.

Sao civilization, Lake Chad basin

Who & why: long before Bamum or Duala, fortified mound settlements along the Chari and Logone rivers and around Lake Chad — in what is now Cameroon's Far North region — produced a distinctive material culture known to archaeology as the Sao civilization, dated by excavation (notably French archaeologist Jean-Paul Lebeuf's 20th-century digs) from roughly the 6th century BCE into the 16th century CE. No Sao state ever unified politically the way the Bamum Kingdom later did; instead dozens of independent fortified villages shared pottery styles, burial customs, and striking terracotta and bronze figurative art. The Kotoko people, who absorb much of the Sao population and territory by the 15th–16th centuries under pressure from the expanding Kanem-Bornu Empire, preserve oral traditions of partial Sao descent.

What it represents: no flag, banner, or comparable symbol survives from any Sao settlement, and the culture is known almost entirely through archaeology rather than any written or oral record of political symbols. Shown here honestly blank rather than invented.

World context: the earliest Sao settlements are roughly contemporary with the Late Period of ancient Egypt and the Nubian Kingdom of Kush's own iron-working cities further up the Nile; the culture's long middle centuries span the entire rise and fall of the Roman Empire, and its final centuries overlap the rise of the Kanem-Bornu Empire from the 9th century CE, the same regional power whose 15th–16th century expansion ultimately absorbs the last independent Sao settlements.