Haplogroup C1 also known as C-F3393, is a major Y-chromosome haplogroup. It is one of two primary branches of the broader Haplogroup C, the other being C2 (also known as C-M217; the former Haplogroup C3). The basal paragroup, C1* (C-F3393*), has not been found, in samples from living or dead males. Of the two primary branches, C1b is common in parts of Oceania and Asia, whereas C1a is extremely rare worldwide and has been found only amongst individuals native to Japan, Nepal, and Southern Europe.