Chriacus is an extinct genus of prehistoric mammal which lived in North America around 63 million years ago.

Chriacus was a raccoon-like mammal of the Paleocene epoch, with a length of about 1 metre (3.3 ft) including its long, robust tail, which may or may not have been prehensile. It had a light build, weighing approximately 7 kg (15 lb), and was an agile tree-climber.