Flag of Guinea-Bissau

A vertical red stripe occupies the hoist side, while the fly is divided into two equal horizontal bands of yellow over green. Centered within the red vertical section is a single five-pointed black star. This design follows a specific 1:2 aspect ratio.

Red commemorates the blood of martyrs shed during the long struggle for national liberation. The yellow stripe represents the tropical sun and the nation's mineral resources, whereas green signifies the country's vast forests and agricultural heritage. Positioned at the hoist, the black star symbolizes the unity of the African continent and its people.

Adopted officially in 1973, the design was directly inspired by the banner of the African Party for the Independence of Guinea and Cape Verde (PAIGC). Prior to this, the region was governed as Portuguese Guinea and flew the national flag of Portugal. The current design has remained unchanged since the country achieved internationally recognized independence in 1974.