The West African CFA franc (French: franc CFA or simply franc, ISO 4217 code: XOF; abbreviation: F.CFA) is the currency used by eight independent states in West Africa which make up the West African Economic and Monetary Union (UEMOA; Union Économique et Monétaire Ouest Africaine): Benin, Burkina Faso, Côte d'Ivoire, Guinea-Bissau, Mali, Niger, Senegal and Togo. These eight countries had a combined population of 105.7 million people in 2014, and a combined GDP of US$128.6 billion (as of 2018).

The acronym CFA stands for Communauté Financière Africaine ("African Financial Community"). The currency is issued by the Central Bank of West African States (BCEAO; Banque Centrale des États de l'Afrique de l'Ouest), located in Dakar, Senegal, for the members of the UEMOA. The franc is nominally subdivided into 100 centimes but no coins or banknotes denominated in centimes have ever been issued. The production of CFA franc notes and coins has been carried out at Chamalières by the Bank of France since its creation in 1945.

The Central African CFA franc is of equal value to the West African CFA franc, and is in circulation in several central African states. They are both commonly referred to as the CFA franc.

In December 2019 it was announced that the West African CFA franc would be reformed, which will include renaming it the eco and reducing France's role in the currency. The broader Economic Community of West African States (ECOWAS), of which the members of UEMOA are also members, plans to introduce its own common currency for its member states by 2027, which they have also formally adopted the name of eco for.