Haplogroup J is a human mitochondrial DNA (mtDNA) haplogroup.
Haplogroup J is believed to have originated in Mesopotamia or Anatolia approximately 10,000 years before present, and to have moved north and west into Europe. It is found throughout Europe with particularly high concentrations around the eastern Baltic Sea, Russia, and the Caucasus. Haplogroup J derives from the haplogroup JT, which also gave rise to haplogroup T.
Haplogroup J was present during the early and middle Upper Paleolithic, but is considered one of the main identifiable markers of Neolithic expansion.
Spread of haplogroup JT Image source
In his popular book The Seven Daughters of Eve, Bryan Sykes named the originator of this mtDNA haplogroup Jasmine.
Spread of Haplogroup J, from National Geographic