A sage. Along with other angirasas, he once conducted a satra to ascend heaven. But none of them knew the path to heaven, so they chose Kalyana to find the way. He met a gandharva named Urnayu who was with a few apsaras. He advised the sage. Kalyana conveyed this to the other sages but did not divulge who told him. Though the angirasas attained heaven with the urnayuvam, Kalyana couldn’t because of his half truth and became a leper, as per Panchavimshabrahmana.