A Note on the Numbers
Ranking ethnic groups by population is trickier than it sounds. Different sources use different definitions, some categories overlap, and self-identification varies between and within countries. The figures below are approximate ranges based on national censuses, international demographic studies, and estimates from research organizations. Where figures are contested, we present a range rather than a single number.
Note also that "ethnic group" is not a fixed scientific category. Some of the groups listed below are best understood as broad ethnolinguistic categories (like "Han Chinese") containing many sub-communities with their own distinct traditions. Others are narrower and more culturally unified. The purpose of this list is to give a rough sense of scale, not to make claims about identity boundaries.
Han Chinese — around 1.4 billion
The Han Chinese are by far the largest ethnic group in the world, making up about 92 percent of the population of mainland China and forming majorities in Taiwan, Singapore, and Hong Kong. The Han identity emerged during the Han Dynasty (206 BCE–220 CE) as a way to distinguish the population of the Chinese heartland from surrounding peoples, and it has since absorbed and integrated many originally distinct communities.
Within the Han category are important regional subgroups: Cantonese speakers in the south, Hakka scattered across many provinces, Hokkien in Fujian, Wu speakers around Shanghai, and many others. These groups share a common written language and cultural framework but often speak mutually unintelligible spoken varieties. The overseas Han diaspora, estimated at around 50 million people, is concentrated in Southeast Asia and increasingly present in the Americas, Australia, and Europe.
Indo-Aryan peoples of India — approximately 900 million
The Indo-Aryan peoples of northern and central India constitute one of the world's largest ethnolinguistic groupings. This is not a single unified group but a broad category encompassing speakers of related languages descended from Sanskrit: Hindi, Bengali, Marathi, Gujarati, Punjabi, Urdu, Odia, Assamese, and many others.
Within this grouping, Bengali speakers alone number around 300 million (in India and Bangladesh combined), Hindi speakers exceed 500 million, and Marathi speakers around 90 million. The Indo-Aryan diaspora is spread across the world, with major communities in the Gulf states, the United Kingdom, the United States, Canada, and historical concentrations in Mauritius, Fiji, Guyana, Trinidad, and South Africa.
Arab peoples — around 450 million
Arab identity is defined primarily by the Arabic language, which spread across the Middle East and North Africa following the rise of Islam in the 7th century CE. The 22 member states of the Arab League together contain roughly 450 million Arab people, though the group is highly diverse in dialect, religion, and cultural tradition.
The largest single Arab population is in Egypt (around 100 million), followed by Sudan, Algeria, Iraq, and Morocco. Arab diaspora communities are substantial: Brazil, the United States, France, Argentina, and Australia all have significant populations of Arab descent, and more recent migration driven by conflict has grown Arab communities in Germany, Sweden, and Canada.
Sub-Saharan African peoples — approximately 1.2 billion
Sub-Saharan Africa is home to more distinct ethnic groups than any other region on Earth. The largest single ethnolinguistic family is the Bantu group, which includes Zulu, Xhosa, Kikuyu, Luba, Kongo, Shona, and many others, and encompasses several hundred million people across central, eastern, and southern Africa. Yoruba (around 45 million), Igbo (around 40 million), Hausa (around 80 million if including closely related groups), Amhara, Oromo, and Fulani are among the largest single ethnic groups within the region.
The Sub-Saharan African diaspora is one of the largest in the world, shaped by the historic transatlantic slave trade and more recent voluntary migration. Descendants of enslaved Africans form significant populations in Brazil, the United States, and the Caribbean. Recent African migration has grown communities in France, the United Kingdom, Portugal, Italy, and Canada.
European ethnolinguistic groups — around 500 million
Europe's major ethnic groups are typically categorized by language family. The Romance peoples (Italian, Spanish, French, Portuguese, Romanian) number around 200 million in Europe itself, with hundreds of millions more in Latin America and other former colonial territories. The Germanic peoples (German, Dutch, Scandinavian, English) number over 100 million in continental Europe, with major diaspora populations especially in North America.
Slavic peoples are the largest single European ethnolinguistic family, with around 300 million people across Eastern Europe and the Balkans. Russians alone number around 130 million, Poles 38 million, Ukrainians 40 million, Serbs, Czechs, Bulgarians, and others adding tens of millions more. Celtic peoples (Irish, Scots Gaelic, Welsh, Bretons) are smaller in Europe but have very large heritage populations abroad, particularly in North America.
Japanese, Korean, and Vietnamese — around 265 million combined
These three East Asian peoples are among the world's most numerous single ethnic groups: Japanese around 125 million (almost all in Japan), Vietnamese around 90 million (with significant diaspora in the US, France, and Australia), and Korean around 76 million split between North and South Korea plus a diaspora of around 7 million.
All three peoples have shaped by centuries of cultural exchange with China but maintain distinct identities, languages, and traditions. Their diasporas, though smaller than those of some other groups, are often highly concentrated and culturally influential in their host countries.
Turkic peoples — approximately 170 million
The Turkic ethnolinguistic family stretches from the Balkans to Siberia and includes Turks of Turkey (around 80 million), Uzbeks (around 35 million), Kazakhs (around 15 million), Azerbaijanis (around 10 million in Azerbaijan plus a comparable population in northern Iran), Uyghurs, Kyrgyz, Turkmen, Tatars, and many smaller groups.
Turkic peoples share related languages but differ significantly in religion, culture, and history. The Turkish diaspora in Western Europe, particularly Germany, is one of the largest and most established Turkic communities outside of Central Asia and the Middle East.
Persian and other Iranian peoples — around 150 million
The Iranian peoples include Persians (around 70 million, mostly in Iran), Kurds (around 30 to 40 million spread across Turkey, Iran, Iraq, and Syria), Pashtuns (around 60 million in Afghanistan and Pakistan), Baloch, Lurs, and Tajiks. They share a family of related Iranian languages descended from ancient Persian.
This grouping is notable for the size of its stateless populations: Kurds are the largest ethnic group without a state of their own, spread across a mountainous region that spans four countries. Iranian diasporas, particularly Iranian and Afghan communities, have grown substantially in the past several decades due to political upheaval.
Malay-Polynesian peoples — around 400 million
The Austronesian language family, of which Malay-Polynesian is the largest branch, spans an enormous geographic area from Madagascar to Easter Island. Major populations include Javanese (around 100 million), Sundanese (around 40 million), Filipinos (around 115 million total for the various Filipino ethnic groups combined), Malays (around 30 million), and smaller populations across Polynesia and Micronesia.
This broad grouping is often broken down into smaller categories in ethnic classification systems because the constituent peoples have distinct cultural identities. But their shared Austronesian linguistic heritage represents one of humanity's great migrations, spread over several thousand years by seafaring peoples.
Indigenous American peoples — around 60 to 70 million
The indigenous peoples of the Americas encompass hundreds of distinct nations across two continents. Larger groupings include Quechua (around 10 million, primarily in Peru, Bolivia, and Ecuador), Aymara (around 2 million), Maya (around 8 million across Guatemala, Mexico, and Belize), Nahua (around 2.5 million in Mexico), and Navajo (around 350,000, the largest single Native American nation in the United States).
A much larger population, often several hundred million people, are of partly indigenous descent through mixed ancestry with European colonizers over the past five centuries. These populations are usually classified separately as "Mestizo" or "Hispanic American" and form the majority in many Latin American countries.