In Greek mythology, Harmonia is the goddess of harmony and concord. Her Roman counterpart is Concordia. Her Greek opposite is Eris, whose Roman counterpart is Discordia.

Eris is the Greek goddess of strife and discord. Her Roman equivalent is Discordia, which means the same. Eris's Greek opposite is Harmonia, whose Roman counterpart is Concordia, though she is also described as opposing Nike, counterpart of the Roman Victoria. Homer equated her with the war-goddess Enyo, whose Roman counterpart is Bellona. The dwarf planet Eris is named after the goddess.