Haplogroup L3
L3 is the African trunk from which all non-African maternal lineages descend — and a dominant haplogroup across sub-Saharan Africa and its diaspora in its own right. Explore the branch in the full mtDNA haplotree — sub-branches, defining variants and where its testers live. Free, no account needed.
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Origin and distribution of L3
L3 sits at one of the human story's hinges: it arose in Africa on the order of seventy thousand years ago, and the M and N super-haplogroups that populate every other continent are its daughters — every maternal line outside Africa descends from within L3. Inside Africa, L3 flourished on its own terms: its branches are dense across East, Central and West Africa, were carried south with the Bantu expansions, and travelled the Sahel and the Indian Ocean trade worlds.
Through the Atlantic slave trade, L3 lineages (with their L2 and L1 relatives) became a major share of the maternal ancestry of African-descended populations across the Americas — and the branch structure is increasingly fine enough to point a diaspora line toward a region, sometimes a people, of origin. An L3 result is therefore two findings at once: membership in one of Africa's great maternal families, and a seat close to the trunk of everyone's tree.
One line among many: your mtDNA haplogroup traces a single maternal line — mother to mother into deep time — so it is a thread of ancestry, not an ethnicity and not a percentage of who you are. Two people in the same branch share a foremother; the rest of their genomes are their own story.
Frequently asked questions
What is haplogroup L3?
L3 is the African trunk from which all non-African maternal lineages descend — and a dominant haplogroup across sub-Saharan Africa and its diaspora in its own right. It is a branch of the mtDNA tree: everyone in it inherits the same set of defining mutations from one shared foremother.
How do I find out if I belong to L3?
If you have already tested with a consumer DNA company, the free mtDNA Haplogroup Finder reads a raw DNA export and places you on the tree at the resolution your file supports — free, and the file is discarded after analysis. A dedicated mtDNA sequencing test resolves deeper branches than a genotyping chip can.
Does belonging to L3 make me related to one people?
No. A haplogroup follows a single maternal line — one ancestor per generation — while the rest of your ancestry doubles every generation back. It is a deep-time thread, not an ethnicity, and two members of the same branch can otherwise be as genetically different as any two strangers.
What does this page's tree data show?
The live browser below shows the branch inside the full mtDNA haplotree of tested lineages — its sub-branches, the variants that define them, and the countries its testers report. Counts reflect people who have taken a mtDNA test and shared an origin, so they describe the tested world, not ancient frequencies.
Keep exploring
Don't know your haplogroup yet? The free mtDNA Haplogroup Finder reads it from a raw DNA export. Or browse the whole tree in the mtDNA Haplotree. Other major branches: