The national flag of Mozambique is a horizontal tricolour of green, black, and golden-yellow with white fimbriations and a red isosceles triangle at the hoist.

The design is based on the first flag of FRELIMO (Mozambique Liberation Front), which has governed the country since its independence from Portugal on 25 June 1975.

The design of the flag is described in Title XVI, Article 297 of the Constitution of Mozambique, 2004 (2007 revision): From top to bottom, there shall be green, black, and gold horizontal stripes, separated by strips of white.

The star represents "the spirit of international solidarity of the Mozambican people", while the book, hoe, and gun symbolise education, production, and defence, respectively.

[11] The flag should be flown at several locations, particularly state institutions, including government offices, barracks, airports, schools, and hospitals.

For example, a 2023 report by the Mozambican newspaper O País ("The Country") found that most of these buildings in the western city of Tete did not fly the national flag.

[14] The Mozambican War of Independence between Portugal and FRELIMO (Mozambique Liberation Front) ended in September 1974 with the signing of the Lusaka Accord and the formation of a transitional government.

[16] British vexillologist William Crampton meanwhile claims that the flag of South Africa's African National Congress was the source of FRELIMO's inspiration.

[16][19] The new flag's design and significance were defined in Title IV, Article 68 of the Constitution of the People's Republic of Mozambique (in effect from 1975 to 1990).

Near the upper hoist was a white cogwheel, charged with a red star and an AK-47 crossed by a hoe, superimposed on an open book.

[23] Jorge Rebelo, a member of FRELIMO's political bureau, acknowledged the debates surrounding the flag but stated that it would remain unchanged.

[24] José Gabriel Manteigas, a RENAMO member of parliament, gave the following critique: As a peaceful country, you can't have a flag with a gun on it.