The global African diaspora is the worldwide collection of communities descended from people from Africa, predominantly in the Americas. The African populations in the Americas are descended from haplogroup L genetic groups of native Africans. The term most commonly refers to the descendants of the native West and Central Africans who were enslaved and shipped to the Americas via the Atlantic slave trade between the 16th and 19th centuries, with their largest populations in the United States, Brazil, and Haiti. However, the term can also be used to refer to African descendants who immigrated to other parts of the world consensually. Some scholars identify "four circulatory phases" of this migration out of Africa. The phrase African diaspora gradually entered common usage at the turn of the 21st century. The term diaspora originates from the Greek διασπορά which gained popularity in English in reference to the Jewish diaspora before being more broadly applied to other populations.

Africa is the world's second largest and second-most populous continent after Asia. At about 30.3 million km2 including adjacent islands, it covers 20% of Earth's land area and 6% of its total surface area. With 1.4 billion people as of 2021, it accounts for about 18% of the world's human population. Africa's population is the youngest amongst all the continents; the median age in 2012 was 19.7, when the worldwide median age was 30.4. Despite a wide range of natural resources, Africa is the least wealthy continent per capita and second-least wealthy by total wealth, ahead of Oceania. Scholars have attributed this to different factors including geography, climate, tribalism, colonialism, the Cold War, neocolonialism, lack of democracy, and corruption. Despite this low concentration of wealth, recent economic expansion and the large and young population make Africa an important economic market in the broader global context.