Y-DNA Haplogroup O and its Subclades - 2011
The entire work is identified by the Version Number and date given on the Main Page.   Directions for citing the document are given at the bottom of the Main Page.
Version History     Last revision date for this specific page: 26 October 2011

Because of continuing research, the structure of the Y-DNA Haplogroup Tree changes and ISOGG does its best to keep the tree updated with the latest developments in the field. The viewer may observe other versions of the tree on the Web. Email Alice Fairhurst if the differences need clarification or if you find any broken links on this page.

LINKS:  Main Page   Y-DNA Tree Trunk   SNP Index   Papers/Presentations Cited   Glossary   Listing Criteria
SNP SYMBOLS:  Not on 2010 tree  Confirmed within subclade  Provisional  Private  Investigation 

O   M175, P186, P191, P196
     O*   -
     O1   MSY2.2
         O1*   -
         O1a   M119, Page20
              O1a*   -
              O1a1   M307.1/P203.1
                  O1a1*   -
                  O1a1a   M101
              O1a2   M50, M103, M110
     O2   L463, L690, P31, M268
         O2*   -
         O2a   PK4
              O2a*   -
                O2a1   M95
                  O2a1*   -
                  O2a1a   M88, M111
                  O2a1b   M297
         O2b   IMS-JST022454, L272.2, M176//Page63/SRY465, M302, P49, Page92
              O2b*   -
              O2b1   M312
                  O2b1*   -
                  O2b1a   47z
                  O2b1b   L682
     O3   M122, P198
         O3*   -
         O3a   M324, P93/Page79, P197, P199, P200
              O3a*   -
              O3a1   L127.1, KL1/L465, KL2/L467
                  O3a1*   -
                  O3a1a   M121, DYS257_1/DYS257_2/P27.2_1/P27.2_2
                  O3a1b   M164
                  O3a1c   IMS-JST002611
                       O3a1c*   -
                       O3a1c1   P103
              O3a2   IMS-JST021354/P201
                  O3a2*   -
                  O3a2a   M159/Page96
                  O3a2b   M7
                       O3a2b*   -
                       O3a2b1   M113, M188, M209
                           O3a2b1*   -
                           O3a2b1a   N4
                           O3a2b1b   N5
                       O3a2b2   P386
                  O3a2c   P164 (See Notes **)
                       O3a2c*   -
                       O3a2c1   M134
                           O3a2c1*   -
                           O3a2c1a   M117, M133, Page23
                                O3a2c1a*   -
                                O3a2c1a1   M162_1, M162_2
                           O3a2c1b   P101
              O3a3   M300
              O3a4   M333

Private SNPs - After having been investigated, these SNPs have not met the population distribution criteria for placement on the tree. Either too few confirmed positive testers have been found OR multiple confirmed testers were confined to either a single surname or to a small group of related males.

SNPs under Investigation - Additional testing is needed to confirm adequate positive samples and/or correct placement on the tree.


Y-DNA haplogroup O probably originated in East Asia and later migrated into the South Pacific. The lineage expanded into Taiwan (high frequency in the aboriginal Taiwanese), Indonesia, Melanesia, Micronesia, and Polynesia.

O3 is the predominant sub-group in China. The O1 and O2a lineages are found in Southeast Asian populations of Malaysia, Vietnam, Indonesia and southern China. The O2b sub-group is of high frequency in the Japanese and Korean populations.

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Additional Resources:
ISOGG Wiki - What you need to know about Genetic Genealogy.
O...O3 Y-DNA Haplogroup Project, Denis Grigoriev.

Corrections/Additions made since 1 January 2011:

Contact Person for Haplogroup O: Gareth Henson

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