A Federation colony where B'Elanna Torres spent her childhood, and where she and her mother Miral were the only Klingons among the settlers.
Kessik IV is a Federation colony world mentioned in Star Trek: Voyager as the childhood home of B'Elanna Torres.
In the episode Faces she recalls growing up there as one of only two Klingons, the other being her mother, at a time of poor relations between the Federation and the Empire. She did what she could to hide her forehead ridges, and came to blame her Klingon half when her human father left the family.
Later episodes, among them Lineage, return to those years. Her fear that her own daughter will be treated as she was on Kessik IV drives her attempt to alter the unborn child's genes.