Haplogroup U5
U5 is the maternal lineage of Europe's Ice Age hunter-gatherers, the oldest major mtDNA branch native to the continent, still carried by about one European in ten. Explore the branch in the full mtDNA haplotree: sub-branches, defining variants and where its testers live. Free, no account needed.
Maternal branch
Live tester counts
Free · no account needed
Maternal line
U5
- Testers
- 38,516
- 10,924 on this exact branch
- Strongest today
- Finland, Estonia, Norway
- Oldest person on this line
Origin and distribution of U5
What is mtDNA haplogroup U5? It is the maternal lineage of Europe's Ice Age hunter-gatherers, the oldest major mtDNA branch native to the continent, still carried by about one European in ten.
- Its ancient record
- U5 dominates the maternal lines of Europe's Mesolithic hunter-gatherers, before the Neolithic farmers arrived with their own lineages.Source: Population genomics of post-glacial western Eurasia (2024)
- Where it is common
- About one European in ten, with the highest frequencies in the north and northeast, and above that among Sami and some Baltic populations.
- What its age does not mean
- An old branch is not a purer or more European lineage. It is one maternal line, and everyone's other ancestry lies outside it.Source: A Copernican Reassessment of the Human Mitochondrial DNA Tree from Its Root (2012)
U5 is as close as mitochondrial DNA comes to an indigenous European lineage. It arose on the continent tens of thousands of years ago, and in ancient DNA it is the overwhelming signature of Europe's Mesolithic hunter-gatherers: in many pre-farming burials, nearly every individual carries U5 or its sisters. When Neolithic farmers arrived with different maternal lines, U5 survived alongside them; today roughly one European in ten carries it.
Its two halves kept distinct geographies: U5b is strongest in western and southern Europe (with a striking concentration among the Sámi, where U5b1b arrived by a northern route), while U5a leans east, common from the Baltic across Russia. For anyone whose result comes back U5, the honest headline is deep time, a maternal line that watched the glaciers leave.
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.
The line through time
Each branch on this line from the root of the tree, oldest first.
Where testers are found
Counts of people who took an mtDNA test and shared an origin. They describe the tested world, not ancient frequencies.
United States
1,578 · 18%
Finland
1,444 · 16%
England
1,047 · 12%
Ireland
988 · 11%
Sweden
970 · 11%
Germany
863 · 9.8%
Norway
445 · 5.1%
Scotland
425 · 4.8%
Plus 10,985 testers who gave no country. Shares are of testers with a known country.
Where this branch runs strongest
The share of each country's testers who sit on this branch.
Finland
1 in 5 · 19%
Estonia
1 in 8 · 13%
Norway
1 in 9 · 12%
What defines it
The changes in the mitochondrial genome that every person on this branch carries. Positions are on the revised Cambridge Reference Sequence.
Is this your line?
If you have tested with a consumer DNA company, your own maternal branch is already in your raw data file. The free mtDNA Haplogroup Finder reads it and shows you where you sit on this tree.
Find my branch, freePrefer it read for you? The Ancient Ancestry report can carry your maternal haplogroup as an add-on, placed on this same tree beside your ancestry model, when your file holds enough mitochondrial markers.
Frequently asked questions
What is haplogroup U5?
U5 is the maternal lineage of Europe's Ice Age hunter-gatherers, the oldest major mtDNA branch native to the continent, still carried by about one European in ten. 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 U5?
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. It is free, and the file is discarded after analysis. A dedicated mtDNA sequencing test resolves deeper branches than a genotyping chip can.
Does belonging to U5 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 branch view on this page shows the branch inside the full mtDNA haplotree of tested lineages: the line it descends from, the branches below it, the variants that define it, 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: