The national flag of Cameroon (drapeau national du Cameroun) was adopted in its present form on 20 May 1975 after Cameroon became a unitary state.

There is a wide variation in the size of the central star, although it is always contained within the inside stripe.

The previous flag of Cameroon, used from 1961 to 1975, had a similar colour scheme, but with two gold (darker than the third stripe by comparison) stars in the upper half of the green.

Military flags and ensigns of Cameroon are following British practice with different designs.

[citation needed] The flag of Cameroon uses the Pan-African colors that is used by many African countries in the region, most notably with similar designs in the flags of Senegal, Guinea and Mali.