The Y chromosome passes from father to son almost unchanged, which makes it a long record of paternal descent. YDNAmaps places those records where the families actually came from, so you can see how lineages sit across regions rather than reading them as a list.
Members submit Y-DNA haplogroups from recognised testing services such as FamilyTreeDNA and YSEQ, together with the kit number behind the result.
Each record is tied to the town or village of the earliest known paternal ancestor — not where the tester lives now. That distinction is what makes the map meaningful.
Browse lineages by colour, search a city or ancestral surname, and compare haplogroup distributions country by country in the statistics view.
Contact details are stored separately from the map data and are visible only to you and the site administrators. Your own name appears publicly only if you tick the box asking for it. An ancestral surname is optional — add it if you want your line to be findable by other researchers, or leave it blank.
Browsing is open to everyone. You only need an account to contribute a result of your own.