The flag of Gabon (French: drapeau du Gabon) is a tricolour consisting of three horizontal green, yellow, and blue bands. Adopted in 1960 to replace the previous colonial flag containing the French Tricolour at the canton, it has been the flag of the Gabonese Republic since the country gained independence that year. The design of the present flag entailed the removal of the Tricolour and the widening of the yellow stripe at the centre.

The French gained control of modern-day Gabon in 1839, when a local chief surrendered the sovereignty of his land to them. The Berlin Conference of 1885 solidified France's claim to the territory through diplomatic recognition, and it later became part of French Equatorial Africa in 1910. Under French colonial rule over Gabon, the authorities forbade the colony from utilizing its own distinctive colonial flag. This was because they were worried that this could increase nationalistic sentiment and lead to calls for independence. However, with the rise of the decolonization movement in Africa, the French were obliged to grant limited autonomy to Gabon as a self-governing republic within the French Community. This was granted in 1958 after a referendum was held supporting the proposal. Wikipedia